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- Jan 2, 2014
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What kind of vibrations are we talking about?
"Chatter" is the term used to describe the case where something flexes, and then springs back. It results in a kinda small stair-step pattern in the work.
The flex can come from worn, loose gibs(carriage, cross-slide or compound), tool post flex, too much lathe bit overhand, etc.
You may need to investigate each one at a time. If you put a dial indicator on the part in question and see how it moves with a small push/pull.
You may also find worn lead-screws and/or nuts on used equipment. This "slop" means the cutting tool can be "pushed around" a little by the work. You can test this easily by trying to move the carriage, cross-slide or top slide by hand (push/pull) without using the crank handle.
Don't try too much force or too long of lever, but try to find out where any flex or movement is.
Can you upload a video of the vibration (with sound), or some still shots of your finished cut?
Keep at it, we'll figure this out.
-brino
"Chatter" is the term used to describe the case where something flexes, and then springs back. It results in a kinda small stair-step pattern in the work.
The flex can come from worn, loose gibs(carriage, cross-slide or compound), tool post flex, too much lathe bit overhand, etc.
You may need to investigate each one at a time. If you put a dial indicator on the part in question and see how it moves with a small push/pull.
You may also find worn lead-screws and/or nuts on used equipment. This "slop" means the cutting tool can be "pushed around" a little by the work. You can test this easily by trying to move the carriage, cross-slide or top slide by hand (push/pull) without using the crank handle.
Don't try too much force or too long of lever, but try to find out where any flex or movement is.
Can you upload a video of the vibration (with sound), or some still shots of your finished cut?
Keep at it, we'll figure this out.
-brino
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