feel the vibration

[juspooln]

having to offset my tail stock to do my butt taper I seem too get a little distortion about 2 to 2.5 in" before a-joint and 1" after the rest of the cue smooth and ready for finish I have seen the set up Pete Tonkin has for his mill jig apiece of angle with maybe some derlin or any kind of support on the back of the cut and wondered if anyone has tried for tapering thanks, Bill

 

[Dave38]

Depending on the type of lathe your using, My advice would be to slow down the rpms of the cue, and also the feedrate. Use a scrap piece of wood or some broken bar cues to test run the speed changes first. Most vibration occurs when the cue is spinning too fast, and/ or the feed rate for the router is to fast. For final pass, my setup takes about 18 minutes, but it's smoooooooth feeling when done.
Dave

 

[juspooln]

wow thats like three well 2 1/2 beers worth of waiting on the last pass I've got mine as slow as possible and I can cut short pieces smooth it just when I get the whole cue in there unless I take a really small pass I get a little bit of distortion right there and remember ed something I had read a bout one of Pete's jigs on feed back on his mill jig and he had something fabed up too take care of it didn't know if it would be worth trying in this case thanks,Bill

 

[KJ Cues]

I believe what you are referring to is a 'follow-rest' but they are a little tough to incorporate into a taper machine.
What you are experiencing is what would be called 'chatter'.
This can be the result of many causes.
Without seeing your machine & set-up, are you cutting 'shovel' or 'climbing'? This can be determined by direction of travel and the relationship of the bit to the work.
Are you cutting with the face of the tool or it's side?
How sharp is the bit and how tight is the machine?
I wish the answer could be made more simple.

Tapering should be done slowly. Make it a 6-pack.

 

[cueman]

I believe what you are referring to is a 'follow-rest' but they are a little tough to incorporate into a taper machine.
What you are experiencing is what would be called 'chatter'.
This can be the result of many causes.
Without seeing your machine & set-up, are you cutting 'shovel' or 'climbing'? This can be determined by direction of travel and the relationship of the bit to the work.
Are you cutting with the face of the tool or it's side?
How sharp is the bit and how tight is the machine?
I wish the answer could be made more simple.

Tapering should be done slowly. Make it a 6-pack.[/QUOTE]

Yeah, but then he will need someone else to come turn the lathe off and load another shaft. If he does it he might get the second shaft on by himself but probably not the third or fourth one.

On the serious side. The lathe RPMs may just be turned up too high if you are using a router. If you are not using a router then that is where to start. Also what rpm speed are you running the lathe and what type of router and bit are you using? How many minutes does it take to do a full pass down the cue? How many thousandths are you taking off at a time? Are you saying that the taper is off a couple of thousands from what you offset the tailstock? If so that is normal. Just adjust it over a little more.

 

[JoeyInCali]

Are you using a wing-cutter or straight-bit ???

 

[juspooln]

its a 6 wing cutter very new and clean on the slowest setting on mid-sized cuesmith porter cable with var. speed controller on line medium and hi setting power feed on slowest no taper bar and I tilt spindle toward headstock a few degrees with only left to right passes I try to take between .o2 and .025 each pass usually last pass is even smaller to final size wanted to post picture today but wife took camera to concert P.S now I now why some guys charge so much for their shafts its paying for all those beers waiting on each 18 minute pass may be I'll try the wrap motor and slow the lathe down a little more or get another VS. controller

 

[juspooln]

a few pic's

I machined in the wrap grove so you can barely see it now darn back up camera every thing else is smooth I figured it was from the extra mass of the connecting screw and as I said before it is slight

 

[juspooln]

this is a link to the thread I was referring too http://forums.azbilliards.com/showthread.php?t=143030 and the butt

 

[WilleeCue]

I have one of those 6 wing cutters.
Problem is that not all the teeth are true to .001".
In fact one is +.004 and the opposite tooth is -.004".
So it ends up with one tooth (the high one) doing all the cutting and that lends itself to vibration.

If your router setup is running real smooth then like the others have said ... it is your rotational or feed speed.
Try rotating the cue at about 120 rpm.

 

[JoeyInCali]

I had that same cutter.
IT has too much pushoff imo.
I like .080 thin kerf 3-wing cutters instead.

 

[masonh]

Most vibration occurs when the cue is spinning too fast, and/ or the feed rate for the router is to fast. For final pass, my setup takes about 18 minutes, but it's smoooooooth feeling when done

i tend to get the opposite results.i usualy cut my butts in just over a minute with the 6 flute bit and have zero chatter.sometimes when i am cutting a cue with koa handle or Quilted maple handle i have to slow it down to 5-6in/min to avoid tear out and i will start to get a little chatter during the slow down on the handle,but at 20in/min +/- i get perfectly smooth cuts.

weird how different setups get different results.Dave i am sure that technically speaking you are correct about the spin rate and fed rates,but i have good luck with high spin rates and high feed rates.

like Wille said those 6 flute bits can be off,but you can have them sharpend up or find a good one and the are the nuts imo.don't buy cheap bits either,buy the best one you can find.

 

[Dave38]

I have the same looking 6 bladed cutter from you know who in alligator world, and had the same results as the others. It wasn't cheap, that's for sure. I actually had better results with the 3 wing cutters from HF than the 6 winger. I have an old Atlas TH54 and for some reason, can't get smooth cuts at the faster speeds, always get the chatter. I'm saving my pennies for a deluxe someday, but until then...I've got time to watch TV between cuts, no beer for me while working. I like my fingers and other body parts too much. I get hurt enough while being sober:grin:
Dave