warped slate?

akadansmith

akadansmith

AzB Silver Member
Silver Member
i have a 7 foot valley bar box. table is completely level. when i slow roll a ball to the corner pockets they seem to roll away from pocket is this from a slate thats warped or could it be from the felt bunched up under pocket? any help would be greatly appreciated.
 
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DeeDeeCues said:
A nittier point. In engineering, everything has a tolerance. In reality, nothing is truly 'flat', or truly 'level'--you show me something flat or level and I can show you a measuring device that can prove it isn't either. A non-flat surface may indeed be level, based on how it is specified. Level can be 'best fit' based off of a system of measurements, 'three-point', based off of designated points, or other different complex criteria.

Flat will also have specifications. Simply, flat may be +/-. More complicated, flat may be +/-, with a not-to-exceed in any given area.

For instance, I used to work on precision cnc machines that had plates with a flatness tolerance of 0.001", not to exceed 0.0005" in any 6", in a constrained condition. Takes some expensive equipment and good machinists to make. Also takes expensive inspection equipment to verify.

So, what is the criteria for a pool table? Simply that the balls roll true to some specification. For most people, it is enough to say that they visually roll true. Probably some standard somewhere. What does that mean in regards to actually calling out inspection dimensions? I don't know.
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Reminds me of the lesson of how do you know a torque wrench is calibrated.

Abbreviated:

Well you load that wrench on a torque transducer and a mechanical loader.

How do you know the transducer is reading correctly?

You check it with physical weights.

How do you know the weights are accurate.

You check them with a calibrated scale adjusted to your GPS location.

How do you know your arm supporting the weights is calibrated.

You check it against ....

How do you know that's correct to the nth degree.

and on and on.

How do you make a perfect cube? I think NIST also has tolerances for their Standards.

This stuff gets interesting if you're a nerd like me but... Table Slates don't need to be as perfect as a Granite Surface.
 
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My diamond pro (red label) has a significant dish to the slates. Not sure what I can do about it short of new slates. Probably a $$$ problem to fix.

Some shots I can adjust for others are damn near impossible. Speed helps, but gets you more bobbles.
 
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Bob Jewett said:
For quite a while. Ten years ago according to another post. They were hoping to move but never found a new place.
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Thanks, I had not been out there in years. I did see they were selling tables in July of 2020; that must have been when they decided that finding another location was impractical, along with the cost of real estate and the pandemic. They were selling some of their GCIII's for $1300.00.
 
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jtaylor996 said:
My diamond pro (red label) has a significant dish to the slates. Not sure what I can do about it short of new slates. Probably a $$$ problem to fix.

Some shots I can adjust for others are damn near impossible. Speed helps, but gets you more bobbles.
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Diamond can sell you the same leveling system used on the Blue Label table. You can also replace that Red with a Blue top or have that crappy red re-worked to blue spec’s
 
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While we are in the subject.... we've all seen billiard shops do this but How can this be good the the bottom table.... even if the upper didnt have the slate on it?

IMG_3685_720x.jpg
 
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PracticeChampion said:
Fair enough but flex and a permanent warp is different.
I've never studied slate so I guess anything is possible I reckon but I've improperly stretched clothe and that exact thing will happen and makes it impossible to shoot a ball down the rail
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Slate does warp, hence pros and cons of 1 piece vs. 3 piece slate. Seams vs. warpage and many experts believe 3 piece slate is able to be more precisely leveled. Opinions vary.
 
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