I would like to know if anybody knows the history of the table saw turning machine?Who was the creator?
I've seen a diagram by David Kershenbrock.Canadian cue said:I would like to know if anybody knows the history of the table saw turning machine?Who was the creator?
Joseph Cues said:I've seen a diagram by David Kershenbrock.
I don't know if he's the first.
Blud here should know. He's the only one I know who makes and sells them.
Great machines from what I've heard.
Canadian cue said:Thanks for the history lesson Blud,Now can you tell me the pros and cons vs lathe and router.My main motives for switching is noise and the thought of having a dedicated machine definitly has it's advantages.My only concern is if you can still keep tight tolerances.If anybody else has some feed back that would be appreciated as well.
blud said:The router is the way most guys turn cut cues. They user this method until they up-grade to a real smooth cutting saw/lathe.
The router makes plenty of noise, my machine runs pretty quite and produces a better cut. The bigger the blade, the faster the tip speed is. A small cutter turns many times and will sometimes give you tool push-off without you even knowing it. [Dwell marks on the surface].
With my 10" saw or the 7-1/4" saw blades, I get real smooth cuts per 30" of wood. This alone, produces a smooth finish.At 3450RPM's, and 30" and taking up to 7 minutes, your get smooth results.
blud
Canadian cue said:Thanks for the history lesson Blud,Now can you tell me the pros and cons vs lathe and router.My main motives for switching is noise and the thought of having a dedicated machine definitly has it's advantages.My only concern is if you can still keep tight tolerances.If anybody else has some feed back that would be appreciated as well.
cueman said:I built one back in 94 or 95 and still use it today. The tolerances are as good as a lathe. I mounted a cross-slide vertically so I could dial in 1/1000ths of an inch to control the depth of cut. Mine is mounted on a Delta table saw. I had another one built made out of Steel and a blade spinning on a motor. That one has given trouble and is now just taking up space. The motor takes about a minute to stop spinning with a 10" blade on it. Whereas the belt driven table saw stops spinning in a few seconds. I like it better than the other machine. I may eventually fix the other machine and either use it or sell it, but for now I turn all shafts on the table saw machine and all butts with a router tapering machine I built also. The router machine is loud so I keep it in another room and that also keeps the exotic wood dust out of the main shop. I have cut off switches on both, so I just load them and leave them. David's book has drawings on how to build the tapering machine. I modified his design for my first machine and have drawings of my version in the Cue Building Book I wrote. Hope my ramblings have been a little help. Best advice is which ever machine you use try to get the butt turning machine away from the main shop area so you don't breath those toxic dusts. The main advantage with the saw machine is the noise factor. Somebody said there are some really quiet German routers. If any body knows where to get one I would like to try one.
Canadian cue said:Cueman, Blud and Joseph cues,thank you for the info much appreciated.I have not decided whether to buy or build or just stick to how I'm doing it now in any case I am in no hurry.Cueman if you don't mind me asking why don't you use the saw for tapering butts? Just curious.
Canadian cue said:Cueman, Blud and Joseph cues,thank you for the info much appreciated.I have not decided whether to buy or build or just stick to how I'm doing it now in any case I am in no hurry.Cueman if you don't mind me asking why don't you use the saw for tapering butts? Just curious.
Joseph Cues said:http://www.ekstromcarlson.com/usedroutermotors.htm
Perske makes the quietest motors around but cost an arm and a leg.
cuesmith said:David told me many years ago, that he got the idea for the saw machine from an old (1950's era) "Popular Mechanics" magazine. They had a set-up for turning square stock to round using the saw. David saw the value of the concept and refined it to what it later became. I've been using a saw machine for 10 years and would never consider going back to a router. Not only is it much quieter, but it gives much better results. There are many more cuts per minute with the saw and due to the radius of the 12" blade, I use, each tooth is taking a very small amount of wood off. Tool pressure is negligable so chatter is non-existant. Incremental cuts, usually a month or two between passes, with a saw machine gives the best results possible, IMHO. I usually get 6 to 8 passes on a shaft to get it to final size.
Another trick I figured out many years ago which made a huge difference in my number of shaft rejects is to get the shaft centers relative to the wood grain. By this I mean, some shafts have a slight runout in the grain when you get them in 1" dowells. When I first center the dowels in preparation for turning, I examine the grain in the wood and sight down the shaft looking for any slight bends. Usually a bend is nearer one end of the shaft than the other. I use my dual chuck lathe with a center drill in the tail stock to bore the centers. The back chuck on the lathe keeps the workpiece aligned. If one end of the shaft appears straighter than the other, I put that end extended out of the front (main) chuck about 1/4" and bore it to where the center drill is down beyond the tapered portion leaving a center about 1/4" diameter tapering down to the size of the center drill tip. This will be the butt or big end of the shaft. I then reverse the shaft in the lathe extending the shaft out about 12 inches from the chuck. When I rotate the chuck, the shaft will have a wobble. I then use the center drill again to put in a shallow center (just the depth of the tip of the center drill) into the end of the shaft. This turning center will not be in the center of the end of the shaft, BUT, it will be the center of where the shaft "wants to be". By doing this, when you turn the shaft for the first time, you'll be taking more off of one side of the end of the shaft than the other, obviously, but that's better than taking a bunch out of one side of the shaft in the middle! This is kind of hard to put in words, but it follows the natural grain of the wood rather than trying to force the wood to go the direction you want. I noticed a dramatic decrease in shafts warping when I implemented this method! I also dip in Nelsonite for about 1 minute after every turning!
Hope this helps!
Sherm
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Sherm
aka "cuesmith" in yahoo
Sherm Custom Billiard Cues by,
Sherman Adamson
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I don't think that faster is the main concern when cutting shafts, maybe you mean cleaner. The saw motor has a speed specification in rpm so if you can have more edges cutting per revolution with a larger diameter blade then your shaft will be smoother. This keeping the same feedrate (inch per minute), cut depth and shaft (work piece) rpm. You'll need to work on getting the right combination of the above to get optimal result and do multiple passes in time intervals between passes.((VH)) said:What's the optimal saw blade diametr? I suppose a smaller blade cuts faster