# Table Difficulty Factor (TDF) for measuring table "toughness"

#### grobbs

##### Greg R
Thank you, and you're welcome. I aim to swerve.
Talked to you in a YouTube comment. My 9ft Gold Crown 2 has 4.25in pockets, 3.625in throat, and 1.5in shelf

The online calculator by Isaac says that makes it a 1.09

I forget the exact measurements of my old table, but it was around a 0.88 I believe, which would imply the new table is roughly 24% more difficult. That sounds about right, in terms of shot difficultly which this seems to measure. The more reactive cushions, better/faster cloth, etc make it more difficult, but those are more things you just need to adjust to overtime.

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
Talked to you in a YouTube comment. My 9ft Gold Crown 2 has 4.25in pockets, 3.625in throat, and 1.5in shelf

The online calculator by Isaac says that makes it a 1.09

I forget the exact measurements of my old table, but it was around a 0.88 I believe, which would imply the new table is roughly 24% more difficult. That sounds about right, in terms of shot difficultly which this seems to measure. The more reactive cushions, better/faster cloth, etc make it more difficult, but those are more things you just need to adjust to overtime.

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
Here's the latest:

Calculate your Table Difficulty Factor (TDF) to determine how tough it plays relative to other tables. Only three pocket measurements are required, and you can use the TDF calculator to get your results.

username - table size, pocket mouth size, mouth-throat difference, shelf depth - TDF (table description)
Vahmurka - 12':1.25, 7.2cm:1.55, 125deg:0.97, 25mm:0.98 - 1.84 (Russian pyramid table)
Side Pocket - 10':1.10, 4 1/4":1.10, 1 1/4":1.14, 2 1/4":1.07 - 1.48 (modified 1920s Brunswick)
CaptiveBred - 10':1.10, 4 1/8":1.15, >143.5deg:1.14, 1 1/2":0.99 - 1.43 (modified Brunswick Anniversary)
Bob Dixon - 9':1.00, 4":1.20, 145deg:1.14, 1 5/8":1.00 - 1.37 (modified red label Diamond Pro)
gregcantrall - 10':1.10, 4":1.20, 5/8":1.00, 1 1/2":0.99 - 1.31 (10' Diamond)
Ricky Sy - 9':1.00, 3 3/4":1.31, 1/4":0.97, 5/8":0.98 - 1.25 (money table)
TEAM SLO - 9':1.00, 3.85":1.25, 0.6":1.00, 1.5":0.99 - 1.24 (shimmed blue label Diamond)
acedonkeyace - 9":1.00, 4":1.20, 1/2":0.99, 2":1.03 - 1.22 (gamble table)
ChrisinNC - 10':1.1, 4 1/4":1.1, 11/16":1.02, 1 5/16":0.99 - 1.22 (shimmed Gabriel Sentinel)
8cree - 9":1.00, 4.125":1.15, 0.813":1.05, 1.562":1.00 - 1.21 (blue label Diamond)
Bonus Ball - 9':1.00, 3 7/8":1.25, 1/8":0.97, 3/4":0.98 - 1.19 (Bonus Ball table)
Marc Vidal - 9':1.00, 4 1/8":1.15, 13/16":1.05, 1":0.98 - 1.18 (shimmed Brunswick Tournament)
chevybob20 - 9':1.00, 4 1/8":1.15, 7/8":1.05, 1":0.98 - 1.18 (modified Centennial)
Baxter - 9':1.00, 4 1/4":1.10, 143deg:1.09, 1 1/8":0.98 - 1.18 (modified AMF Grand Prix)
Qaddiction - 9':1.00, 4 1/8":1.15, 3/4":1.02, 1 3/8":0.99 - 1.16 (Diamond)
angluse - 8'+: 0.95, 3 13/16":1.25, 9/16":1.00, 7/8":0.98 - 1.16 (modified 1935 Brunswick Challenger)
Tom Cruise - 9':1.00, 4":1.20, 1/8":0.97, 1 3/8":0.99 - 1.15 (Golden West)
ChrisinNC - 10':1.1, 4 3/8":1.05, 11/16":1.02, 1 5/16":0.98 - 1.15 (modified Gabriel Sentinel)
rexus31 - 9':1.00, 4":1.20, 3/8":0.98, 1":0.98 - 1.15 (1950s AMF)
FatBoy - 9':1.00, 4":1.20, 1/4":0.97, 1":0.98 - 1.14 (modified GC)
TATE - 9':1.00, 4":1.20, 1/4":0.97, 7/8":0.98 - 1.14 (modified GC)
Mikjary - 9':1.00, 4":1.15, 9/16":1.00, 1 5/16":0.98 - 1.13 (Brunswick Centurion)
ChrisinNC - 9':1.00, 4 1/8":1.15, 5/8":1.0, 1 1/4":0.98 - 1.13 (modified Gabriel Signature Pro)
rexus31 - 9':1.0, 4.125":1.15, 0.505":0.99, 1.125":0.98 - 1.12 (GC I)
Cardigan Kid - 10':1.10, 4.5":1.00, 0.88":1.04, 1.5":0.98 - 1.12 (GC)
Ralph Kramden - 9':1.0, 4 5/16":1.05, 1":1.07, 1 3/4":1.00 - 1.12 (GC I)
pocket - 9':1.00, 4 3/16":1.10, 7/16":0.99, 1 7/8":1.03 - 1.12 (unknown)
Justaneng - 8':0.90, 4":1.20, 7/8":1.05, 1 1/2":0.99 - 1.12 (Olhausen)
ShaneVanNothin - 9':1.00, 4 1/4":1.10, 1":0.97, 2":1.03 - 1.10 (Modified Brunswick)
Neil - 7':0.85, 4 1/8":1.15, 1 1/4":1.14, 1 3/8":0.99 - 1.10 (modified Valley)
MahnaMahna - 10':1.10, 5 1/2":0.85, 2":1.09, 2 1/2": 1.07 - 1.09 (converted from snooker table)
tjlmbklr - 8'+:0.95, 4":1.15, 141deg:1.02, 1 1/4":0.98 - 1.09 (unknown)
grobbs - 9':1.00, 4 1/4":1.10, 0.625":1.00, 1.5":0.99 - 1.09 (GC II)
Cardigan Kid - 9':1.00, 4 1/4":1.10, 0.45":0.99, 1 5/16":0.99 - 1.08 (GC II)
kanzzo - 9':1.00, 4 1/4":1.10, 5/8":1.00, 1":0.98 - 1.08 (GC V)
MSchaffer - 9':1.00, 4 7/16:1.00, 15/16":1.07, 1 5/8":1.00 - 1.07 (modified GC II)
cigardave - 9':1.00, 4 1/2":1.00, 1":1.07, 1 3/4":1.00 - 1.07 (Pro-Cut Diamond)
peppersauce - 9':1.00, 4 1/4":1.10, 3/8":0.98, 1 1/4":0.98 - 1.06 (GC 3)
Side Pocket - 10':1.10, 4 7/8":0.91, 1":1.07, 1 1/2":0.98 - 1.05 (1920s Brunswick)
Pool Hustler - 9':1.00, 4 1/4":1.10, 1/4":0.97, 15/16":0.98 - 1.05 (modified GC)
JC - 9':1.00, 4 7/16":1.00, 143deg:1.07, 1 3/8":0.98 - 1.05 (modified GC III)
Banger - 9':1.00, 4 1/2":1.00, 7/8":1.04, 1 3/4":1.00 - 1.04 (modified GC III)
Jimmorrison - 7':0.85, 3 7/8":1.25, 7/16":0.99, 3/4":0.98 - 1.03 (modified Ruxton)
SloMoHolic - 9':1.00, 4 1/2":1.00, 7/8":1.04, 1 3/8":0.98 - 1.02 (red label Diamond Pro)
jondrums - 9':1.00, 11.9cm:0.95, 2.5cm:1.07, 4.2cm:1.00 - 1.02 (Diamond Pro)
CoreyClark - 9':1.00, 5":0.91, 1":1.07, 2 1/8":1.05 - 1.02 (GC I)
bignick31985 - 9':1.00, 4 3/8":1.05, 0.475":0.98, 1.5":0.98 - 1.01 (GC IV)
"standard" table - 9':1.00, 4 7/16":1.00, 9/16":1.00, 1 5/8":1.00 - 1.00 (average-difficulty table)
Tennesseejoe- 9':1.00, 4.25":1.05, 1/4":0.97, 1 3/8":0.98 - 1.00 (1912 Brunswick Saratoga)
coxcol15 - 7':0.85, 4.25":1.10, 1":1.09, 1.25":0.98 - 1.00 (Valley with Ridgeback pro cuts)
Goldball - 8':0.90, 12.2cm:0.91, 4cm:1.14, 5.4cm:1.07 - 1.00 (Heiron & Smith)
dr_dave - 9':1.00, 5": 0.91, 1 1/8":1.10, 1 3/8":0.99 - 0.99 (GC II)
Call_me_Tom - 7':0.85, 4":1.20, 1/2":0.99, 1":0.98 - 0.99 (Valley with Penguin Pro rails)
MVPCues - 9':1.00, 4 1/2":1.00, 1/2":0.98, 1 5/8":1.00 - 0.98 (1902 Brunswick Jefferson)
oldschool1478 - 9':1.00, 4 1/2":1.00, 0.625":1.00, 1.5":0.98 - 0.98 (red label Diamond Pro)
freds - 8'+: 0.95, 4.9":0.91, 1.1":1.1, 1.8" 1.03 - 0.98 (Gandy Big G)
cjr3559 - 9':1.00, 4 1/2":1.00, 3/4":1.02, 1 1/4":0.97 - 0.97 (GC V - Tournament)
Cardigan Kid - 9':1.00, 4 1/2":1.00, 3/4":1.02, 1 1/16":0.95 - 0.97 (GC III)
wigglybridge - 9':1.00, 4 1/2":1.00, 5/8":1.00, 1 1/2": 0.98 - 0.98 (rebuilt GC)
westcoast - 7':0.85, 4":1.20, 0":0.97, 1.5":0.99 - 0.98 (Valley)
BryanB - 9':1.00, 4 1/2":1.00, 3/4":1.02, 1 1/4":0.95 - 0.97 (1931 double-shimmed Brunswick)
Poolmanis - 9':1.00, 10.9cm:1.05, 1cm:0.97, 3.1cm:0.95 - 0.97 (modified SAM)
Vahmurka - 9':1.0, 12.5cm:0.91, 20mm:1.04, 45mm:1.03 - 0.97 (Brunswick Metro)
mamics - 9':1.00, 4 11/16":0.95, 143deg:1.07, 1 3/16":0.95 - 0.97 (no-name)
Will Maynard - 9':1.00, 4 3/4":0.95, 1":1.07, 3/4":0.95 - 0.97 (1904 Brunswick Narragansett)
dzcues - 9':1.00, 4 7/8":0.91, 11/16":1.02, 1 15/16":1.03 - 0.96 (Diamond)
jviss - 9’:1.00, 4.98”:0.91, 0.76”:1.04, 1.625”:1.00 - 0.95 (GC I)
logical - 9':1.00, 5": 0.91, 7/8":1.04, 1 3/4":1.00 - 0.95 (GC II)
dr_dave - 9':1.00, 5": 0.91, 1":1.07, 1 1/5":0.98 - 0.95 (Olhausen)
dzcues - 9':1.00, 5":0.91, 15/16":1.07, 1 1/2":0.98 - 0.95 (Gandy Big G)
Sloppy Pockets - 8'+:0.95, 5":0.91, 1 1/8":1.10, 1 3/4":1.00 - 0.95 (A.E. Schmidt)
44Runner - 8':0.925, 4 3/8":1.05, 3/4":1.02, 1":0.95 - 0.94 (blue label Diamond Pro-Am)
jtaylor-996 - 8' pro:0.95, 4.5":1.00, 0.5":0.98, 1.625":1.0 - 0.93 (red label Diamond)
Corwyn_8 - 9':1.00, 4 3/4":0.95, 1 3/4":1.02, 1 1/4":0.95 - 0.92 (Gandy Winchester)
beetle - 9':1.00, 13.1cm:0.88, 2.2cm:1.03, 4.3cm:1.00 - 0.91 (Olhausen York)
frigopie - 9':1.00, 11.5cm:0.95, 138.7deg:0.98, 3.5cm:0.98 - 0.91 (Eurotour Dynamic III)
12squared - 9':1.00, 4 7/8":0.91, 3/4":1.02, 1 1/2":0.98 - 0.91 (GC)
iusedtoberich - 9':1.00, 5 1/8":0.88, 1":1.05, 1 1/2":0.97 - 0.90 (GC)
MSchaffer - 9':1.00, 5 1/8":0.88, 3/4":1.01, 1 3/4":1.00 - 0.89 (GC II)
mfinkelstein3 - 9':1.00, 5 1/8":0.88, 7/8":1.03, 1 1/2": 0.97 - 0.88 (GC III)
StraightPoolIU - 9':1.00, 4 7/8":0.91, 3/4":1.02, 1 1/4":0.95 - 0.88 (GC I)
Vahmurka - 9':1.00, 5 1/8":0.88, 7/8":1.03, 1 1/2": 0.97 - 0.88 (GC)
Dopc - 8':0.90, 4 1/2":1.00, 3/4":1.02, 1 1/4":0.95 - 0.87 (Connelly)
SloMoHolic - 8':0.90, 4 3/4":0.95, 3/4":1.02, 1 5/8":1.00 - 0.87 (Brunswick Medalist)
RobMan - 9':1.0, 5": 0.88, 3/4":1.01, 1.5":0.97 - 0.86 (GC)
sniggihs - 7':0.85, 4 1/2":1.00, 5/8":1.00, 1 3/4":1.00 - 0.85 (blue label Diamond)
SloMoHolic - 8'+:0.95, 4 7/8":0.91, 7/8":1.04, 1 1/4":0.95 - 0.85 (Brunswick Medalist)
buckshotshoey - 8':0.90, 4 3/4":0.95, 3/4":1.02, 1 1/2":0.98 - 0.85 (American Heritage)
nateobot - 7':0.85, 4 3/8":1.05, 1/2":0.95, 1 3/4":1.00 - 0.85 (custom)
angluse - 8'+: 0.95, 4 5/8":0.95, 7/16":0.98, 1 3/16":0.95 - 0.84 (1935 Brunswick Challenger)
dr_dave - 8':0.90, 4 3/4":0.95, 5/8":1.00, 1 3/8":0.98 - 0.84 (Connelly)
BRussell - 8':0.90, 5":0.91, 13/16":1.04, 1 1/2":0.98 - 0.83 (Olhausen)
Lovepool - 9':1.00, 13cm:0.88, 1cm:0.96, 3.5cm:0.97 - 0.82 (home)
jtaylor996 - 7':0.85, 5 1/8":0.88, 146deg:1.09, 1.51":1.00 - 0.82 (Legacy)
Mooneye - 7':0.85, 4 7/8":0.91, 3/4":1.02, 1 5/8":1.00 - 0.79 (Brunswick Ranchero)
SloMoHolic - 6':0.85, 4 1/2":1.00, 0":0.95, 5/8":0.95 - 0.77 (Valley)
dzcues - 7':0.85, 4 1/2":1.00, 0":0.95, 1/2":0.95 - 0.77 (Valley)
dr_dave - 7':0.85, 4 1/2":1.00, 0":0.95, 3/4":0.95 - 0.77 (Valley)

#### IbeAnEngineer

##### AzB Silver Member
Silver Member
Calculate your Table Difficulty Factor (TDF) to determine how tough it plays relative to other tables. Only three pocket measurements are required, and you can use the TDF calculator to get your results.

username - table size, pocket mouth size, mouth-throat difference, shelf depth - TDF (table description)
Vahmurka - 12':1.25, 7.2cm:1.55, 125deg:0.97, 25mm:0.98 - 1.84 (Russian pyramid table)
Side Pocket - 10':1.10, 4 1/4":1.10, 1 1/4":1.14, 2 1/4":1.07 - 1.48 (1920s Brunswick)
CaptiveBred - 10':1.10, 4 1/8":1.15, >143.5deg:1.14, 1 1/2":0.99 - 1.43 (Brunswick Anniversary)
Bob Dixon - 9':1.00, 4":1.20, 145deg:1.14, 1 5/8":1.00 - 1.37 (Diamond Pro)
gregcantrall - 10':1.10, 4":1.20, 5/8":1.00, 1 1/2":0.99 - 1.31 (10' Diamond)
Ricky Sy - 9':1.00, 3 3/4":1.31, 1/4":0.97, 5/8":0.98 - 1.25 (money table)
TEAM SLO - 9':1.00, 3.85":1.25, 0.6":1.00, 1.5":0.99 - 1.24 (Diamond)
acedonkeyace - 9":1.00, 4":1.20, 1/2":0.99, 2":1.03 - 1.22 (gamble table)
ChrisinNC - 10':1.1, 4 1/4":1.1, 11/16":1.02, 1 5/16":0.99 - 1.22 (Gabriel Sentinel)
8cree - 9":1.00, 4.125":1.15, 0.813":1.05, 1.562":1.00 - 1.21 (Diamond)
Bonus Ball - 9':1.00, 3 7/8":1.25, 1/8":0.97, 3/4":0.98 - 1.19 (Bonus Ball table)
Marc Vidal - 9':1.00, 4 1/8":1.15, 13/16":1.05, 1":0.98 - 1.18 (Brunswick Tournament)
chevybob20 - 9':1.00, 4 1/8":1.15, 7/8":1.05, 1":0.98 - 1.18 (Centennial)
Baxter - 9':1.00, 4 1/4":1.10, 143deg:1.09, 1 1/8":0.98 - 1.18 (AMF Grand Prix)
Qaddiction - 9':1.00, 4 1/8":1.15, 3/4":1.02, 1 3/8":0.99 - 1.16 (Diamond)
angluse - 8'+: 0.95, 3 13/16":1.25, 9/16":1.00, 7/8":0.98 - 1.16 (1935 Brunswick Challenger)
Tom Cruise - 9':1.00, 4":1.20, 1/8":0.97, 1 3/8":0.99 - 1.15 (Golden West)
ChrisinNC - 10':1.1, 4 3/8":1.05, 11/16":1.02, 1 5/16":0.98 - 1.15 (Gabriel Sentinel)
rexus31 - 9':1.00, 4":1.20, 3/8":0.98, 1":0.98 - 1.15 (1950s AMF)
FatBoy - 9':1.00, 4":1.20, 1/4":0.97, 1":0.98 - 1.14 (GC)
TATE - 9':1.00, 4":1.20, 1/4":0.97, 7/8":0.98 - 1.14 (GC)
Mikjary - 9':1.00, 4":1.15, 9/16":1.00, 1 5/16":0.98 - 1.13 (Brunswick Centurion)
ChrisinNC - 9':1.00, 4 1/8":1.15, 5/8":1.0, 1 1/4":0.98 - 1.13 (Gabriel Signature Pro)
rexus31 - 9':1.0, 4.125":1.15, 0.505":0.99, 1.125":0.98 - 1.12 (GC I)
Cardigan Kid - 10':1.10, 4.5":1.00, 0.88":1.04, 1.5":0.98 - 1.12 (GC)
Ralph Kramden - 9':1.0, 4 5/16":1.05, 1":1.07, 1 3/4":1.00 - 1.12 (GC I)
pocket - 9':1.00, 4 3/16":1.10, 7/16":0.99, 1 7/8":1.03 - 1.12 (unknown)
Justaneng - 8':0.90, 4":1.20, 7/8":1.05, 1 1/2":0.99 - 1.12 (Olhausen)
ShaneVanNothin - 9':1.00, 4 1/4":1.10, 1":0.97, 2":1.03 - 1.10 (Brunswick)
Neil - 7':0.85, 4 1/8":1.15, 1 1/4":1.14, 1 3/8":0.99 - 1.10 (Valley)
MahnaMahna - 10':1.10, 5 1/2":0.85, 2":1.09, 2 1/2": 1.07 - 1.09 (converted from snooker table)
tjlmbklr - 8'+:0.95, 4":1.15, 141deg:1.02, 1 1/4":0.98 - 1.09 (unknown)
grobbs - 9':1.00, 4 1/4":1.10, 0.625":1.00, 1.5":0.99 - 1.09 (GC II)
Cardigan Kid - 9':1.00, 4 1/4":1.10, 0.45":0.99, 1 5/16":0.99 - 1.08 (GC II)
kanzzo - 9':1.00, 4 1/4":1.10, 5/8":1.00, 1":0.98 - 1.08 (GC V)
MSchaffer - 9':1.00, 4 7/16:1.00, 15/16":1.07, 1 5/8":1.00 - 1.07 (GC II)
cigardave - 9':1.00, 4 1/2":1.00, 1":1.07, 1 3/4":1.00 - 1.07 (Pro-Cut Diamond)
peppersauce - 9':1.00, 4 1/4":1.10, 3/8":0.98, 1 1/4":0.98 - 1.06 (GC 3)
Side Pocket - 10':1.10, 4 7/8":0.91, 1":1.07, 1 1/2":0.98 - 1.05 (1920s Brunswick)
Pool Hustler - 9':1.00, 4 1/4":1.10, 1/4":0.97, 15/16":0.98 - 1.05 (GC)
JC - 9':1.00, 4 7/16":1.00, 143deg:1.07, 1 3/8":0.98 - 1.05 (GC III)
Banger - 9':1.00, 4 1/2":1.00, 7/8":1.04, 1 3/4":1.00 - 1.04 (GC III)
Jimmorrison - 7':0.85, 3 7/8":1.25, 7/16":0.99, 3/4":0.98 - 1.03 (Ruxton)
SloMoHolic - 9':1.00, 4 1/2":1.00, 7/8":1.04, 1 3/8":0.98 - 1.02 (Diamond Pro)
jondrums - 9':1.00, 11.9cm:0.95, 2.5cm:1.07, 4.2cm:1.00 - 1.02 (Diamond Pro)
CoreyClark - 9':1.00, 5":0.91, 1":1.07, 2 1/8":1.05 - 1.02 (GC I)
bignick31985 - 9':1.00, 4 3/8":1.05, 0.475":0.98, 1.5":0.98 - 1.01 (GC IV)
"standard" table - 9':1.00, 4 7/16":1.00, 9/16":1.00, 1 5/8":1.00 - 1.00 (average-difficulty table)
Tennesseejoe- 9':1.00, 4.25":1.05, 1/4":0.97, 1 3/8":0.98 - 1.00 (1912 Brunswick Saratoga)
coxcol15 - 7':0.85, 4.25":1.10, 1":1.09, 1.25":0.98 - 1.00 (Valley with Ridgeback pro cuts)
Goldball - 8':0.90, 12.2cm:0.91, 4cm:1.14, 5.4cm:1.07 - 1.00 (Heiron & Smith)
dr_dave - 9':1.00, 5": 0.91, 1 1/8":1.10, 1 3/8":0.99 - 0.99 (GC II)
Call_me_Tom - 7':0.85, 4":1.20, 1/2":0.99, 1":0.98 - 0.99 (Valley with Penguin Pro rails)
MVPCues - 9':1.00, 4 1/2":1.00, 1/2":0.98, 1 5/8":1.00 - 0.98 (1902 Brunswick Jefferson)
oldschool1478 - 9':1.00, 4 1/2":1.00, 0.625":1.00, 1.5":0.98 - 0.98 (Diamond Pro)
freds - 8'+: 0.95, 4.9":0.91, 1.1":1.1, 1.8" 1.03 - 0.98 (Gandy Big G)
cjr3559 - 9':1.00, 4 1/2":1.00, 3/4":1.02, 1 1/4":0.97 - 0.97 (GC V - Tournament)
Cardigan Kid - 9':1.00, 4 1/2":1.00, 3/4":1.02, 1 1/16":0.95 - 0.97 (GC III)
wigglybridge - 9':1.00, 4 1/2":1.00, 5/8":1.00, 1 1/2": 0.98 - 0.98 (rebuilt GC)
westcoast - 7':0.85, 4":1.20, 0":0.97, 1.5":0.99 - 0.98 (Valley)
BryanB - 9':1.00, 4 1/2":1.00, 3/4":1.02, 1 1/4":0.95 - 0.97 (1931 Brunswick)
Poolmanis - 9':1.00, 10.9cm:1.05, 1cm:0.97, 3.1cm:0.95 - 0.97 (SAM)
Vahmurka - 9':1.0, 12.5cm:0.91, 20mm:1.04, 45mm:1.03 - 0.97 (Brunswick Metro)
mamics - 9':1.00, 4 11/16":0.95, 143deg:1.07, 1 3/16":0.95 - 0.97 (no-name)
Will Maynard - 9':1.00, 4 3/4":0.95, 1":1.07, 3/4":0.95 - 0.97 (1904 Brunswick Narragansett)
dzcues - 9':1.00, 4 7/8":0.91, 11/16":1.02, 1 15/16":1.03 - 0.96 (Diamond)
jviss - 9’:1.00, 4.98”:0.91, 0.76”:1.04, 1.625”:1.00 - 0.95 (GC I)
logical - 9':1.00, 5": 0.91, 7/8":1.04, 1 3/4":1.00 - 0.95 (GC II)
dr_dave - 9':1.00, 5": 0.91, 1":1.07, 1 1/5":0.98 - 0.95 (Olhausen)
dzcues - 9':1.00, 5":0.91, 15/16":1.07, 1 1/2":0.98 - 0.95 (Gandy Big G)
Sloppy Pockets - 8'+:0.95, 5":0.91, 1 1/8":1.10, 1 3/4":1.00 - 0.95 (A.E. Schmidt)
44Runner - 8':0.925, 4 3/8":1.05, 3/4":1.02, 1":0.95 - 0.94 (Diamond Pro-Am)
jtaylor-996 - 8' pro:0.95, 4.5":1.00, 0.5":0.98, 1.625":1.0 - 0.93 (Diamond)
Corwyn_8 - 9':1.00, 4 3/4":0.95, 1 3/4":1.02, 1 1/4":0.95 - 0.92 (Gandy Winchester)
beetle - 9':1.00, 13.1cm:0.88, 2.2cm:1.03, 4.3cm:1.00 - 0.91 (Olhausen York)
frigopie - 9':1.00, 11.5cm:0.95, 138.7deg:0.98, 3.5cm:0.98 - 0.91 (Eurotour Dynamic III)
12squared - 9':1.00, 4 7/8":0.91, 3/4":1.02, 1 1/2":0.98 - 0.91 (GC)
iusedtoberich - 9':1.00, 5 1/8":0.88, 1":1.05, 1 1/2":0.97 - 0.90 (GC)
MSchaffer - 9':1.00, 5 1/8":0.88, 3/4":1.01, 1 3/4":1.00 - 0.89 (GC II)
mfinkelstein3 - 9':1.00, 5 1/8":0.88, 7/8":1.03, 1 1/2": 0.97 - 0.88 (GC III)
StraightPoolIU - 9':1.00, 4 7/8":0.91, 3/4":1.02, 1 1/4":0.95 - 0.88 (GC I)
Vahmurka - 9':1.00, 5 1/8":0.88, 7/8":1.03, 1 1/2": 0.97 - 0.88 (GC)
Dopc - 8':0.90, 4 1/2":1.00, 3/4":1.02, 1 1/4":0.95 - 0.87 (Connelly)
SloMoHolic - 8':0.90, 4 3/4":0.95, 3/4":1.02, 1 5/8":1.00 - 0.87 (Brunswick Medalist)
RobMan - 9':1.0, 5": 0.88, 3/4":1.01, 1.5":0.97 - 0.86 (GC)
sniggihs - 7':0.85, 4 1/2":1.00, 5/8":1.00, 1 3/4":1.00 - 0.85 (Diamond)
SloMoHolic - 8'+:0.95, 4 7/8":0.91, 7/8":1.04, 1 1/4":0.95 - 0.85 (Brunswick Medalist)
buckshotshoey - 8':0.90, 4 3/4":0.95, 3/4":1.02, 1 1/2":0.98 - 0.85 (American Heritage)
nateobot - 7':0.85, 4 3/8":1.05, 1/2":0.95, 1 3/4":1.00 - 0.85 (custom)
angluse - 8'+: 0.95, 4 5/8":0.95, 7/16":0.98, 1 3/16":0.95 - 0.84 (1935 Brunswick Challenger)
dr_dave - 8':0.90, 4 3/4":0.95, 5/8":1.00, 1 3/8":0.98 - 0.84 (Connelly)
BRussell - 8':0.90, 5":0.91, 13/16":1.04, 1 1/2":0.98 - 0.83 (Olhausen)
Lovepool - 9':1.00, 13cm:0.88, 1cm:0.96, 3.5cm:0.97 - 0.82 (home)
jtaylor996 - 7':0.85, 5 1/8":0.88, 146deg:1.09, 1.51":1.00 - 0.82 (Legacy)
Mooneye - 7':0.85, 4 7/8":0.91, 3/4":1.02, 1 5/8":1.00 - 0.79 (Brunswick Ranchero)
SloMoHolic - 6':0.85, 4 1/2":1.00, 0":0.95, 5/8":0.95 - 0.77 (Valley)
dzcues - 7':0.85, 4 1/2":1.00, 0":0.95, 1/2":0.95 - 0.77 (Valley)
dr_dave - 7':0.85, 4 1/2":1.00, 0":0.95, 3/4":0.95 - 0.77 (Val
IbeAnEngineer - 9', 4.5", 1.0", 1.5" - 1.05 (GC 1)

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
IbeAnEngineer - 9', 4.5", 1.0", 1.5" - 1.05 (GC 1)

Thank you for posting, especially with excellent format. I've added you to the list.

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
Here's the latest:

Calculate your Table Difficulty Factor (TDF) to determine how tough it plays relative to other tables. Only three pocket measurements are required, and you can use the TDF calculator to get your results.

username - table size, pocket mouth size, mouth-throat difference, shelf depth - TDF (table description)
Vahmurka - 12', 7.2cm, 125deg, 25mm - 1.84 (Russian pyramid table)
Side Pocket - 10', 4 1/4", 1 1/4", 2 1/4" - 1.48 (1920s Brunswick)
CaptiveBred - 10', 4 1/8", >143.5deg, 1 1/2" - 1.43 (Brunswick Anniversary)
Bob Dixon - 9', 4", 145deg, 1 5/8" - 1.37 (Diamond Pro)
gregcantrall - 10', 4", 5/8", 1 1/2" - 1.31 (10' Diamond)
Ricky Sy - 9', 3 3/4", 1/4", 5/8" - 1.25 (money table)
TEAM SLO - 9', 3.85", 0.6", 1.5" - 1.24 (Diamond)
acedonkeyace - 9", 4", 1/2", 2" - 1.22 (gamble table)
ChrisinNC - 10', 4 1/4", 11/16", 1 5/16" - 1.22 (Gabriel Sentinel)
8cree - 9", 4.125", 0.813", 1.562" - 1.21 (Diamond)
Bonus Ball - 9', 3 7/8", 1/8", 3/4" - 1.19 (Bonus Ball table)
Marc Vidal - 9', 4 1/8", 13/16", 1" - 1.18 (Brunswick Tournament)
chevybob20 - 9', 4 1/8", 7/8", 1" - 1.18 (Centennial)
Baxter - 9', 4 1/4", 143deg, 1 1/8" - 1.18 (AMF Grand Prix)
Qaddiction - 9', 4 1/8", 3/4", 1 3/8" - 1.16 (Diamond)
angluse - 8'+, 3 13/16", 9/16", 7/8" - 1.16 (1935 Brunswick Challenger)
Tom Cruise - 9', 4", 1/8", 1 3/8" - 1.15 (Golden West)
ChrisinNC - 10', 4 3/8", 11/16", 1 5/16" - 1.15 (Gabriel Sentinel)
rexus31 - 9', 4", 3/8", 1" - 1.15 (1950s AMF)
FatBoy - 9', 4", 1/4", 1" - 1.14 (GC)
TATE - 9', 4", 1/4", 7/8" - 1.14 (GC)
Mikjary - 9', 4", 9/16", 1 5/16" - 1.13 (Brunswick Centurion)
ChrisinNC - 9', 4 1/8", 5/8", 1 1/4" - 1.13 (Gabriel Signature Pro)
rexus31 - 9', 4.125", 0.505", 1.125" - 1.12 (GC I)
Cardigan Kid - 10', 4.5", 0.88", 1.5" - 1.12 (GC)
Ralph Kramden - 9', 4 5/16", 1", 1 3/4" - 1.12 (GC I)
pocket - 9', 4 3/16", 7/16", 1 7/8" - 1.12 (unknown)
Justaneng - 8', 4", 7/8", 1 1/2" - 1.12 (Olhausen)
ShaneVanNothin - 9', 4 1/4", 1", 2" - 1.10 (Brunswick)
Neil - 7':0.85, 4 1/8", 1 1/4", 1 3/8" - 1.10 (Valley)
MahnaMahna - 10', 5 1/2", 2", 2 1/2" - 1.09 (converted from snooker table)
tjlmbklr - 8'+, 4", 141deg, 1 1/4" - 1.09 (unknown)
grobbs - 9', 4 1/4", 0.625", 1.5" - 1.09 (GC II)
Cardigan Kid - 9', 4 1/4", 0.45", 1 5/16" - 1.08 (GC II)
kanzzo - 9', 4 1/4", 5/8", 1" - 1.08 (GC V)
MSchaffer - 9', 4 7/16, 15/16", 1 5/8" - 1.07 (GC II)
cigardave - 9', 4 1/2", 1", 1 3/4" - 1.07 (Pro-Cut Diamond)
peppersauce - 9', 4 1/4", 3/8", 1 1/4" - 1.06 (GC III)
Side Pocket - 10', 4 7/8", 1", 1 1/2" - 1.05 (1920s Brunswick)
Pool Hustler - 9', 4 1/4", 1/4", 15/16" - 1.05 (GC)
IbeAnEngineer - 9', 4.5", 1.0", 1.5" - 1.05 (GC I)
JC - 9', 4 7/16", 143deg, 1 3/8" - 1.05 (GC III)
Banger - 9', 4 1/2", 7/8", 1 3/4" - 1.04 (GC III)
Jimmorrison - 7', 3 7/8", 7/16", 3/4" - 1.03 (Ruxton)
SloMoHolic - 9', 4 1/2", 7/8", 1 3/8" - 1.02 (Diamond Pro)
jondrums - 9', 11.9cm, 2.5cm, 4.2cm - 1.02 (Diamond Pro)
CoreyClark - 9', 5", 1", 2 1/8" - 1.02 (GC I)
bignick31985 - 9', 4 3/8", 0.475", 1.5" - 1.01 (GC IV)
"standard" table - 9', 4 7/16", 9/16", 1 5/8" - 1.00 (average-difficulty table)
Tennesseejoe- 9', 4.25", 1/4", 1 3/8" - 1.00 (1912 Brunswick Saratoga)
coxcol15 - 7', 4.25", 1", 1.25" - 1.00 (Valley with Ridgeback pro cuts)
Goldball - 8', 12.2cm, 4cm, 5.4cm - 1.00 (Heiron & Smith)
dr_dave - 9', 5", 1 1/8", 1 3/8" - 0.99 (GC II)
Call_me_Tom - 7', 4", 1/2", 1" - 0.99 (Valley with Penguin Pro rails)
MVPCues - 9', 4 1/2", 1/2", 1 5/8" - 0.98 (1902 Brunswick Jefferson)
oldschool1478 - 9', 4 1/2", 0.625", 1.5" - 0.98 (Diamond Pro)
freds - 8'+, 4.9", 1.1", 1.8" - 0.98 (Gandy Big G)
cjr3559 - 9', 4 1/2", 3/4", 1 1/4" - 0.97 (GC V - Tournament)
Cardigan Kid - 9', 4 1/2", 3/4", 1 1/16" - 0.97 (GC III)
wigglybridge - 9', 4 1/2", 5/8", 1 1/2" - 0.98 (rebuilt GC)
westcoast - 7', 4", 0", 1.5" - 0.98 (Valley)
BryanB - 9', 4 1/2"0, 3/4", 1 1/4" - 0.97 (1931 Brunswick)
Poolmanis - 9', 10.9cm, 1cm, 3.1cm - 0.97 (SAM)
Vahmurka - 9', 12.5cm, 20mm, 45mm - 0.97 (Brunswick Metro)
mamics - 9', 4 11/16", 143deg, 1 3/16" - 0.97 (no-name)
Will Maynard - 9', 4 3/4", 1", 3/4" - 0.97 (1904 Brunswick Narragansett)
dzcues - 9', 4 7/8", 11/16", 1 15/16" - 0.96 (Diamond)
jviss - 9’, 4.98”, 0.76”, 1.625” - 0.95 (GC I)
logical - 9', 5", 7/8", 1 3/4" - 0.95 (GC II)
dr_dave - 9', 5", 1", 1 1/5" - 0.95 (Olhausen)
dzcues - 9', 5", 15/16", 1 1/2" - 0.95 (Gandy Big G)
Sloppy Pockets - 8'+, 5", 1 1/8", 1 3/4" - 0.95 (A.E. Schmidt)
44Runner - 8', 4 3/8", 3/4", 1" - 0.94 (Diamond Pro-Am)
jtaylor-996 - 8' pro, 4.5", 0.5", 1.625" - 0.93 (Diamond)
Corwyn_8 - 9', 4 3/4", 1 3/4", 1 1/4" - 0.92 (Gandy Winchester)
beetle - 9', 13.1cm, 2.2cm, 4.3cm - 0.91 (Olhausen York)
frigopie - 9', 11.5cm, 138.7deg, 3.5cm - 0.91 (Eurotour Dynamic III)
12squared - 9', 4 7/8", 3/4", 1 1/2" - 0.91 (GC)
iusedtoberich - 9', 5 1/8", 1":, 1 1/2" - 0.90 (GC)
MSchaffer - 9', 5 1/8", 3/4", 1 3/4" - 0.89 (GC II)
mfinkelstein3 - 9', 5 1/8", 7/8", 1 1/2" - 0.88 (GC III)
StraightPoolIU - 9', 4 7/8", 3/4", 1 1/4" - 0.88 (GC I)
Vahmurka - 9', 5 1/8", 7/8", 1 1/2" - 0.88 (GC)
Dopc - 8', 4 1/2", 3/4", 1 1/4" - 0.87 (Connelly)
SloMoHolic - 8', 4 3/4", 3/4", 1 5/8" - 0.87 (Brunswick Medalist)
RobMan - 9', 5", 3/4", 1.5" - 0.86 (GC)
sniggihs - 7', 4 1/2", 5/8", 1 3/4" - 0.85 (Diamond)
SloMoHolic - 8'+, 4 7/8", 7/8", 1 1/4" - 0.85 (Brunswick Medalist)
buckshotshoey - 8', 4 3/4", 3/4", 1 1/2" - 0.85 (American Heritage)
nateobot - 7', 4 3/8", 1/2", 1 3/4" - 0.85 (custom)
angluse - 8'+, 4 5/8", 7/16", 1 3/16" - 0.84 (1935 Brunswick Challenger)
dr_dave - 8', 4 3/4", 5/8", 1 3/8" - 0.84 (Connelly)
BRussell - 8', 5", 13/16", 1 1/2" - 0.83 (Olhausen)
Lovepool - 9', 13cm, 1cm, 3.5cm - 0.82 (home)
jtaylor996 - 7', 5 1/8", 146deg, 1.51" - 0.82 (Legacy)
Mooneye - 7', 4 7/8", 3/4", 1 5/8" - 0.79 (Brunswick Ranchero)
SloMoHolic - 6', 4 1/2", 0", 5/8" - 0.77 (Valley)
dzcues - 7', 4 1/2", 0", 1/2" - 0.77 (Valley)
dr_dave - 7', 4 1/2", 0", 3/4" - 0.77 (Valley)

#### Bob Jewett

##### AZB Osmium Member
Staff member
Gold Member
Silver Member
The Russian pyramid table probably needs some kind of correction for ball size. The official tournament ball size is 68mm.
(See post 459.)

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
The Russian pyramid table probably needs some kind of correction for ball size. The official tournament ball size is 68mm.
(See post 459.)
Good point. I should not have included the Russian Pyramid table in the first place. The TDF system is really appropriate only for pool tables. A Russian Pyramid table is truly "off the charts" of the TDF system. I've decided to remove it from the list.

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
Here's the latest:

Calculate your Table Difficulty Factor (TDF) to determine how tough it plays relative to other tables. Only three pocket measurements are required, and you can use the TDF calculator or TDF spreadsheet to get your results.

username - table size, pocket mouth size, mouth-throat difference, shelf depth - TDF (table description)
Side Pocket - 10', 4 1/4", 1 1/4", 2 1/4" - 1.48 (1920s Brunswick)
CaptiveBred - 10', 4 1/8", >143.5deg, 1 1/2" - 1.43 (Brunswick Anniversary)
Bob Dixon - 9', 4", 145deg, 1 5/8" - 1.37 (Diamond Pro)
gregcantrall - 10', 4", 5/8", 1 1/2" - 1.31 (10' Diamond)
Ricky Sy - 9', 3 3/4", 1/4", 5/8" - 1.25 (money table)
TEAM SLO - 9', 3.85", 0.6", 1.5" - 1.24 (Diamond)
acedonkeyace - 9", 4", 1/2", 2" - 1.22 (gamble table)
ChrisinNC - 10', 4 1/4", 11/16", 1 5/16" - 1.22 (Gabriel Sentinel)
8cree - 9", 4.125", 0.813", 1.562" - 1.21 (Diamond)
Bonus Ball - 9', 3 7/8", 1/8", 3/4" - 1.19 (Bonus Ball table)
Marc Vidal - 9', 4 1/8", 13/16", 1" - 1.18 (Brunswick Tournament)
chevybob20 - 9', 4 1/8", 7/8", 1" - 1.18 (Centennial)
Baxter - 9', 4 1/4", 143deg, 1 1/8" - 1.18 (AMF Grand Prix)
Qaddiction - 9', 4 1/8", 3/4", 1 3/8" - 1.16 (Diamond)
angluse - 8'+, 3 13/16", 9/16", 7/8" - 1.16 (1935 Brunswick Challenger)
Tom Cruise - 9', 4", 1/8", 1 3/8" - 1.15 (Golden West)
ChrisinNC - 10', 4 3/8", 11/16", 1 5/16" - 1.15 (Gabriel Sentinel)
rexus31 - 9', 4", 3/8", 1" - 1.15 (1950s AMF)
FatBoy - 9', 4", 1/4", 1" - 1.14 (GC)
TATE - 9', 4", 1/4", 7/8" - 1.14 (GC)
Mikjary - 9', 4", 9/16", 1 5/16" - 1.13 (Brunswick Centurion)
ChrisinNC - 9', 4 1/8", 5/8", 1 1/4" - 1.13 (Gabriel Signature Pro)
rexus31 - 9', 4.125", 0.505", 1.125" - 1.12 (GC I)
Cardigan Kid - 10', 4.5", 0.88", 1.5" - 1.12 (GC)
Ralph Kramden - 9', 4 5/16", 1", 1 3/4" - 1.12 (GC I)
pocket - 9', 4 3/16", 7/16", 1 7/8" - 1.12 (unknown)
Justaneng - 8', 4", 7/8", 1 1/2" - 1.12 (Olhausen)
ShaneVanNothin - 9', 4 1/4", 1", 2" - 1.10 (Brunswick)
Neil - 7':0.85, 4 1/8", 1 1/4", 1 3/8" - 1.10 (Valley)
MahnaMahna - 10', 5 1/2", 2", 2 1/2" - 1.09 (converted from snooker table)
tjlmbklr - 8'+, 4", 141deg, 1 1/4" - 1.09 (unknown)
grobbs - 9', 4 1/4", 0.625", 1.5" - 1.09 (GC II)
Cardigan Kid - 9', 4 1/4", 0.45", 1 5/16" - 1.08 (GC II)
kanzzo - 9', 4 1/4", 5/8", 1" - 1.08 (GC V)
MSchaffer - 9', 4 7/16, 15/16", 1 5/8" - 1.07 (GC II)
cigardave - 9', 4 1/2", 1", 1 3/4" - 1.07 (Pro-Cut Diamond)
peppersauce - 9', 4 1/4", 3/8", 1 1/4" - 1.06 (GC III)
Side Pocket - 10', 4 7/8", 1", 1 1/2" - 1.05 (1920s Brunswick)
Pool Hustler - 9', 4 1/4", 1/4", 15/16" - 1.05 (GC)
IbeAnEngineer - 9', 4.5", 1.0", 1.5" - 1.05 (GC I)
JC - 9', 4 7/16", 143deg, 1 3/8" - 1.05 (GC III)
Banger - 9', 4 1/2", 7/8", 1 3/4" - 1.04 (GC III)
Jimmorrison - 7', 3 7/8", 7/16", 3/4" - 1.03 (Ruxton)
SloMoHolic - 9', 4 1/2", 7/8", 1 3/8" - 1.02 (Diamond Pro)
jondrums - 9', 11.9cm, 2.5cm, 4.2cm - 1.02 (Diamond Pro)
CoreyClark - 9', 5", 1", 2 1/8" - 1.02 (GC I)
bignick31985 - 9', 4 3/8", 0.475", 1.5" - 1.01 (GC IV)
"standard" table - 9', 4 7/16", 9/16", 1 5/8" - 1.00 (average-difficulty table)
Tennesseejoe- 9', 4.25", 1/4", 1 3/8" - 1.00 (1912 Brunswick Saratoga)
coxcol15 - 7', 4.25", 1", 1.25" - 1.00 (Valley with Ridgeback pro cuts)
Goldball - 8', 12.2cm, 4cm, 5.4cm - 1.00 (Heiron & Smith)
dr_dave - 9', 5", 1 1/8", 1.5" - 0.99 (Olhausen)
dr_dave - 9', 5", 1 1/8", 1 3/8" - 0.99 (GC II)
Call_me_Tom - 7', 4", 1/2", 1" - 0.99 (Valley with Penguin Pro rails)
MVPCues - 9', 4 1/2", 1/2", 1 5/8" - 0.98 (1902 Brunswick Jefferson)
oldschool1478 - 9', 4 1/2", 0.625", 1.5" - 0.98 (Diamond Pro)
freds - 8'+, 4.9", 1.1", 1.8" - 0.98 (Gandy Big G)
cjr3559 - 9', 4 1/2", 3/4", 1 1/4" - 0.97 (GC V - Tournament)
Cardigan Kid - 9', 4 1/2", 3/4", 1 1/16" - 0.97 (GC III)
wigglybridge - 9', 4 1/2", 5/8", 1 1/2" - 0.98 (rebuilt GC)
westcoast - 7', 4", 0", 1.5" - 0.98 (Valley)
BryanB - 9', 4 1/2"0, 3/4", 1 1/4" - 0.97 (1931 Brunswick)
Poolmanis - 9', 10.9cm, 1cm, 3.1cm - 0.97 (SAM)
Vahmurka - 9', 12.5cm, 20mm, 45mm - 0.97 (Brunswick Metro)
mamics - 9', 4 11/16", 143deg, 1 3/16" - 0.97 (no-name)
Will Maynard - 9', 4 3/4", 1", 3/4" - 0.97 (1904 Brunswick Narragansett)
dzcues - 9', 4 7/8", 11/16", 1 15/16" - 0.96 (Diamond)
jviss - 9’, 4.98”, 0.76”, 1.625” - 0.95 (GC I)
logical - 9', 5", 7/8", 1 3/4" - 0.95 (GC II)
dzcues - 9', 5", 15/16", 1 1/2" - 0.95 (Gandy Big G)
Sloppy Pockets - 8'+, 5", 1 1/8", 1 3/4" - 0.95 (A.E. Schmidt)
44Runner - 8', 4 3/8", 3/4", 1" - 0.94 (Diamond Pro-Am)
jtaylor-996 - 8' pro, 4.5", 0.5", 1.625" - 0.93 (Diamond)
Corwyn_8 - 9', 4 3/4", 1 3/4", 1 1/4" - 0.92 (Gandy Winchester)
beetle - 9', 13.1cm, 2.2cm, 4.3cm - 0.91 (Olhausen York)
frigopie - 9', 11.5cm, 138.7deg, 3.5cm - 0.91 (Eurotour Dynamic III)
12squared - 9', 4 7/8", 3/4", 1 1/2" - 0.91 (GC)
iusedtoberich - 9', 5 1/8", 1":, 1 1/2" - 0.90 (GC)
MSchaffer - 9', 5 1/8", 3/4", 1 3/4" - 0.89 (GC II)
mfinkelstein3 - 9', 5 1/8", 7/8", 1 1/2" - 0.88 (GC III)
StraightPoolIU - 9', 4 7/8", 3/4", 1 1/4" - 0.88 (GC I)
Vahmurka - 9', 5 1/8", 7/8", 1 1/2" - 0.88 (GC)
Dopc - 8', 4 1/2", 3/4", 1 1/4" - 0.87 (Connelly)
SloMoHolic - 8', 4 3/4", 3/4", 1 5/8" - 0.87 (Brunswick Medalist)
RobMan - 9', 5", 3/4", 1.5" - 0.86 (GC)
sniggihs - 7', 4 1/2", 5/8", 1 3/4" - 0.85 (Diamond)
SloMoHolic - 8'+, 4 7/8", 7/8", 1 1/4" - 0.85 (Brunswick Medalist)
buckshotshoey - 8', 4 3/4", 3/4", 1 1/2" - 0.85 (American Heritage)
nateobot - 7', 4 3/8", 1/2", 1 3/4" - 0.85 (custom)
angluse - 8'+, 4 5/8", 7/16", 1 3/16" - 0.84 (1935 Brunswick Challenger)
dr_dave - 8', 4 3/4", 5/8", 1 3/8" - 0.84 (Connelly)
BRussell - 8', 5", 13/16", 1 1/2" - 0.83 (Olhausen)
Lovepool - 9', 13cm, 1cm, 3.5cm - 0.82 (home)
jtaylor996 - 7', 5 1/8", 146deg, 1.51" - 0.82 (Legacy)
Mooneye - 7', 4 7/8", 3/4", 1 5/8" - 0.79 (Brunswick Ranchero)
SloMoHolic - 6', 4 1/2", 0", 5/8" - 0.77 (Valley)
dzcues - 7', 4 1/2", 0", 1/2" - 0.77 (Valley)
dr_dave - 7', 4 1/2", 0", 3/4" - 0.77 (Valley)

Last edited:

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
FYI, I just posted a new video that describes and demonstrates the Table Difficulty Factor (TDF) system. Check it out:

Enjoy!

#### pogmothoin

##### AzB Gold Member
Gold Member
Silver Member
Does the pocket bevel angle play a factor in how the table plays?

My rails on my GC1 were done by Mark Gregory. I believe his bevels 12°. I think the closer you get to zero degrees, balls hit into the pocket facing may be more difficult to pocket. Correct me if I'm wrong.

#### TrxR

##### Well-known member
Has anyone here ever measured a 8 foot valley? Or a 9 foot Palason?

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
Does the pocket bevel angle play a factor in how the table plays?

My rails on my GC1 were done by Mark Gregory. I believe his bevels 12°. I think the closer you get to zero degrees, balls hit into the pocket facing may be more difficult to pocket. Correct me if I'm wrong.

Like many things, bevel angle can have an effect, but I suspect it is not as big as the other factors. I would think a larger bevel angle could make the pockets a little "tighter" since the facing could play softer allowing a ball to compress the facings more.

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
Has anyone here ever measured a 8 foot valley? Or a 9 foot Palason?

There are some 6' and 7' Valleys on the list already. If you have access to an 8' Valley or a 9' Palason, please take the measurements and post the info here. Thanks.

#### grobbs

##### Greg R
There are some 6' and 7' Valleys on the list already. If you have access to an 8' Valley or a 9' Palason, please take the measurements and post the info here. Thanks.
Is there a way to simply this? For example, have TDF for each model of table (obviously having different numbers for pocket size and table size).

But for example, all full size Gold Crown 2s are .... all 7ft Valleys are ....

Maybe I'm missing something, but it seems shelf and angle size should be the same on all Gold Crowns, so its one way to simplify. Then people can just check Gold Crown 2 to see how difficult it might be (baring pocket size)

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
Is there a way to simply this? For example, have TDF for each model of table (obviously having different numbers for pocket size and table size).

But for example, all full size Gold Crown 2s are .... all 7ft Valleys are ....

Maybe I'm missing something, but it seems shelf and angle size should be the same on all Gold Crowns, so its one way to simplify. Then people can just check Gold Crown 2 to see how difficult it might be (baring pocket size)

Agreed. It would be nice if we had a list of manufacturer factory-spec measurements and TDFs for all brands, models, and years. However, when people replace cushions and shims, or add shims, all three variables (mouth size, facing angle, and shelf depth) can change. The hole in the slate is in the same place; but as the facing angle is changed, the pocket points move in and out relative to the shelf (and the shelf depth relative to the point-to-point mouth line changes).

For example, if I replace the cushions on my Olhausen table and have them cut with a smaller facing angle to make the pocket mouth smaller, the table would probably play easier (due to the smaller facing angle and smaller shelf depth), especially for shots with any pace. I should do this so people will stop saying how big my pockets look, and so I can more easily pocket balls requiring speed.

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
Here's the latest:

Calculate your Table Difficulty Factor (TDF) to determine how tough it plays relative to other tables. Only three pocket measurements are required, and you can use the TDF calculator or TDF spreadsheet to get your results.

username - table size, pocket mouth size, mouth-throat difference, shelf depth - TDF (table description)
Side Pocket - 10', 4 1/4", 1 1/4", 2 1/4" - 1.48 (1920s Brunswick)
CaptiveBred - 10', 4 1/8", >143.5deg, 1 1/2" - 1.43 (Brunswick Anniversary)
Bob Dixon - 9', 4", 145deg, 1 5/8" - 1.37 (Diamond Pro)
gregcantrall - 10', 4", 5/8", 1 1/2" - 1.31 (10' Diamond)
Ricky Sy - 9', 3 3/4", 1/4", 5/8" - 1.25 (money table)
TEAM SLO - 9', 3.85", 0.6", 1.5" - 1.24 (Diamond)
acedonkeyace - 9", 4", 1/2", 2" - 1.22 (gamble table)
ChrisinNC - 10', 4 1/4", 11/16", 1 5/16" - 1.22 (Gabriel Sentinel)
8cree - 9", 4.125", 0.813", 1.562" - 1.21 (Diamond)
Bonus Ball - 9', 3 7/8", 1/8", 3/4" - 1.19 (Bonus Ball table)
Marc Vidal - 9', 4 1/8", 13/16", 1" - 1.18 (Brunswick Tournament)
chevybob20 - 9', 4 1/8", 7/8", 1" - 1.18 (Centennial)
Baxter - 9', 4 1/4", 143deg, 1 1/8" - 1.18 (AMF Grand Prix)
Qaddiction - 9', 4 1/8", 3/4", 1 3/8" - 1.16 (Diamond)
angluse - 8'+, 3 13/16", 9/16", 7/8" - 1.16 (1935 Brunswick Challenger)
Tom Cruise - 9', 4", 1/8", 1 3/8" - 1.15 (Golden West)
ChrisinNC - 10', 4 3/8", 11/16", 1 5/16" - 1.15 (Gabriel Sentinel)
rexus31 - 9', 4", 3/8", 1" - 1.15 (1950s AMF)
FatBoy - 9', 4", 1/4", 1" - 1.14 (GC)
TATE - 9', 4", 1/4", 7/8" - 1.14 (GC)
Mikjary - 9', 4", 9/16", 1 5/16" - 1.13 (Brunswick Centurion)
ChrisinNC - 9', 4 1/8", 5/8", 1 1/4" - 1.13 (Gabriel Signature Pro)
rexus31 - 9', 4.125", 0.505", 1.125" - 1.12 (GC I)
Cardigan Kid - 10', 4.5", 0.88", 1.5" - 1.12 (GC)
Ralph Kramden - 9', 4 5/16", 1", 1 3/4" - 1.12 (GC I)
pocket - 9', 4 3/16", 7/16", 1 7/8" - 1.12 (unknown)
Justaneng - 8', 4", 7/8", 1 1/2" - 1.12 (Olhausen)
ShaneVanNothin - 9', 4 1/4", 1", 2" - 1.10 (Brunswick)
Neil - 7':0.85, 4 1/8", 1 1/4", 1 3/8" - 1.10 (Valley)
MahnaMahna - 10', 5 1/2", 2", 2 1/2" - 1.09 (converted from snooker table)
tjlmbklr - 8'+, 4", 141deg, 1 1/4" - 1.09 (unknown)
grobbs - 9', 4 1/4", 0.625", 1.5" - 1.09 (GC II)
Cardigan Kid - 9', 4 1/4", 0.45", 1 5/16" - 1.08 (GC II)
kanzzo - 9', 4 1/4", 5/8", 1" - 1.08 (GC V)
MSchaffer - 9', 4 7/16, 15/16", 1 5/8" - 1.07 (GC II)
cigardave - 9', 4 1/2", 1", 1 3/4" - 1.07 (Pro-Cut Diamond)
peppersauce - 9', 4 1/4", 3/8", 1 1/4" - 1.06 (GC III)
Side Pocket - 10', 4 7/8", 1", 1 1/2" - 1.05 (1920s Brunswick)
Pool Hustler - 9', 4 1/4", 1/4", 15/16" - 1.05 (GC)
IbeAnEngineer - 9', 4.5", 1.0", 1.5" - 1.05 (GC I)
JC - 9', 4 7/16", 143deg, 1 3/8" - 1.05 (GC III)
Banger - 9', 4 1/2", 7/8", 1 3/4" - 1.04 (GC III)
Jimmorrison - 7', 3 7/8", 7/16", 3/4" - 1.03 (Ruxton)
SloMoHolic - 9', 4 1/2", 7/8", 1 3/8" - 1.02 (Diamond Pro)
jondrums - 9', 11.9cm, 2.5cm, 4.2cm - 1.02 (Diamond Pro)
CoreyClark - 9', 5", 1", 2 1/8" - 1.02 (GC I)
bignick31985 - 9', 4 3/8", 0.475", 1.5" - 1.01 (GC IV)
"standard" table - 9', 4 7/16", 9/16", 1 5/8" - 1.00 (average-difficulty table)
Tennesseejoe- 9', 4.25", 1/4", 1 3/8" - 1.00 (1912 Brunswick Saratoga)
coxcol15 - 7', 4.25", 1", 1.25" - 1.00 (Valley with Ridgeback pro cuts)
Goldball - 8', 12.2cm, 4cm, 5.4cm - 1.00 (Heiron & Smith)
dr_dave - 9', 5", 1 1/8", 1.5" - 0.99 (Olhausen)
dr_dave - 9', 5", 1 1/8", 1 3/8" - 0.99 (GC II)
Call_me_Tom - 7', 4", 1/2", 1" - 0.99 (Valley with Penguin Pro rails)
MVPCues - 9', 4 1/2", 1/2", 1 5/8" - 0.98 (1902 Brunswick Jefferson)
oldschool1478 - 9', 4 1/2", 0.625", 1.5" - 0.98 (Diamond Pro)
freds - 8'+, 4.9", 1.1", 1.8" - 0.98 (Gandy Big G)
cjr3559 - 9', 4 1/2", 3/4", 1 1/4" - 0.97 (GC V - Tournament)
Cardigan Kid - 9', 4 1/2", 3/4", 1 1/16" - 0.97 (GC III)
wigglybridge - 9', 4 1/2", 5/8", 1 1/2" - 0.98 (rebuilt GC)
westcoast - 7', 4", 0", 1.5" - 0.98 (Valley)
BryanB - 9', 4 1/2"0, 3/4", 1 1/4" - 0.97 (1931 Brunswick)
Poolmanis - 9', 10.9cm, 1cm, 3.1cm - 0.97 (SAM)
Vahmurka - 9', 12.5cm, 20mm, 45mm - 0.97 (Brunswick Metro)
mamics - 9', 4 11/16", 143deg, 1 3/16" - 0.97 (no-name)
Will Maynard - 9', 4 3/4", 1", 3/4" - 0.97 (1904 Brunswick Narragansett)
dzcues - 9', 4 7/8", 11/16", 1 15/16" - 0.96 (Diamond)
jviss - 9’, 4.98”, 0.76”, 1.625” - 0.95 (GC I)
logical - 9', 5", 7/8", 1 3/4" - 0.95 (GC II)
dzcues - 9', 5", 15/16", 1 1/2" - 0.95 (Gandy Big G)
Sloppy Pockets - 8'+, 5", 1 1/8", 1 3/4" - 0.95 (A.E. Schmidt)
44Runner - 8', 4 3/8", 3/4", 1" - 0.94 (Diamond Pro-Am)
jtaylor-996 - 8' pro, 4.5", 0.5", 1.625" - 0.93 (Diamond)
Corwyn_8 - 9', 4 3/4", 1 3/4", 1 1/4" - 0.92 (Gandy Winchester)
beetle - 9', 13.1cm, 2.2cm, 4.3cm - 0.91 (Olhausen York)
frigopie - 9', 11.5cm, 138.7deg, 3.5cm - 0.91 (Eurotour Dynamic III)
12squared - 9', 4 7/8", 3/4", 1 1/2" - 0.91 (GC)
iusedtoberich - 9', 5 1/8", 1":, 1 1/2" - 0.90 (GC)
MSchaffer - 9', 5 1/8", 3/4", 1 3/4" - 0.89 (GC II)
mfinkelstein3 - 9', 5 1/8", 7/8", 1 1/2" - 0.88 (GC III)
StraightPoolIU - 9', 4 7/8", 3/4", 1 1/4" - 0.88 (GC I)
Vahmurka - 9', 5 1/8", 7/8", 1 1/2" - 0.88 (GC)
Dopc - 8', 4 1/2", 3/4", 1 1/4" - 0.87 (Connelly)
SloMoHolic - 8', 4 3/4", 3/4", 1 5/8" - 0.87 (Brunswick Medalist)
RobMan - 9', 5", 3/4", 1.5" - 0.86 (GC)
sniggihs - 7', 4 1/2", 5/8", 1 3/4" - 0.85 (Diamond)
SloMoHolic - 8'+, 4 7/8", 7/8", 1 1/4" - 0.85 (Brunswick Medalist)
buckshotshoey - 8', 4 3/4", 3/4", 1 1/2" - 0.85 (American Heritage)
nateobot - 7', 4 3/8", 1/2", 1 3/4" - 0.85 (custom)
angluse - 8'+, 4 5/8", 7/16", 1 3/16" - 0.84 (1935 Brunswick Challenger)
dr_dave - 8', 4 3/4", 5/8", 1 3/8" - 0.84 (Connelly)
BRussell - 8', 5", 13/16", 1 1/2" - 0.83 (Olhausen)
Lovepool - 9', 13cm, 1cm, 3.5cm - 0.82 (home)
jtaylor996 - 7', 5 1/8", 146deg, 1.51" - 0.82 (Legacy)
Mooneye - 7', 4 7/8", 3/4", 1 5/8" - 0.79 (Brunswick Ranchero)
SloMoHolic - 6', 4 1/2", 0", 5/8" - 0.77 (Valley)
dzcues - 7', 4 1/2", 0", 1/2" - 0.77 (Valley)
dr_dave - 7', 4 1/2", 0", 3/4" - 0.77 (Valley)

Last edited:

#### The_JV

##### 'AZB_Combat Certified'
Calculate your Table Difficulty Factor (TDF) to determine how tough it plays relative to other tables. Only three pocket measurements are required, and you can use the TDF calculator or TDF spreadsheet to get your results.
So I've been doing a crap ton of research into the setting up of pocket dimensions/angles, and I'm wondering why the downward angle of the pocket face isn't a variable within the TDF calc....?

From what I have read. The downward facing angle will be adjusted based on shelf depth. "Deeper" the shelf, the more downward angle. The additional angle helps slow the ball as it enters the pocket, and helps direct the OB into the throat of the pocket.

So two pockets with otherwise identical dimensions will play differently if their downward angles vary.

#### dr_dave

##### Instructional Author
Gold Member
Silver Member
So I've been doing a crap ton of research into the setting up of pocket dimensions/angles, and I'm wondering why the downward angle of the pocket face isn't a variable within the TDF calc....?

... partly since its effects are not as important as the other factors. See also the answer to the 2nd question on the TDF resource page.

From what I have read. The downward facing angle will be adjusted based on shelf depth. "Deeper" the shelf, the more downward angle. The additional angle helps slow the ball as it enters the pocket, and helps direct the OB into the throat of the pocket.

That makes sense.

So two pockets with otherwise identical dimensions will play differently if their downward angles vary.

Yes, but probably not very differently over the ranges of bevel (downward) angles typically used.

#### The_JV

##### 'AZB_Combat Certified'
... partly since its effects are not as important as the other factors. See also the answer to the 2nd question on the TDF resource page.
Yes, a considerably lesser role than the other factors. The mechanics sure do like to hold onto that shred of info though. Secret sauce if you will.
Yes, but probably not very differently over the ranges of bevel (downward) angles typically used.
So far I have only managed to stumble across numbers ranging from 15 degrees to 11. 15 being common on Diamond tables. 11 was used on a GC of some vintage with a rather short shelf after a rail reno.