Here's my thoughts.. I'd value any feedback...
I get a lot of chatter when I part off on my Sherline. Gibs are tight.
1. I often use a 1/8 inch cutoff tool (from taig) that I have mounted on the forward tool post. The bit cuts exactly at the center. I get lot of chatter with larger diameter stock (above 0.500"). cutting closer to the center (lower forces?) is much better.
2. Today I ground a 1/16 toolbit, again mounted on the center. It does better compared to the 1/8 tool - but I do get a lot of chatter on a 3/4 steel part...
Questions...
1. Why do I get so much chatter? Am I pushing the limits of the machine trying to part off 3/4" steel or aluminum?
2. Can I get rid of the chatter by using a thinner tool? Perhaps make one by grinding a piece of a hacksaw blade (.032")?
3. Does a rear parting tool help?
4. If I clamp down the cross slide on the bed, would that help? Any ideas how to do that (if it's helpful that is...)...
thanks in advance for your thoughts...
tom
PS. I'm posting the same e-mail to the other lists... I'll compose a list of answers as I get them and I'll feed back to this list also...
I get a lot of chatter when I part off on my Sherline. Gibs are tight.
1. I often use a 1/8 inch cutoff tool (from taig) that I have mounted on the forward tool post. The bit cuts exactly at the center. I get lot of chatter with larger diameter stock (above 0.500"). cutting closer to the center (lower forces?) is much better.
2. Today I ground a 1/16 toolbit, again mounted on the center. It does better compared to the 1/8 tool - but I do get a lot of chatter on a 3/4 steel part...
Questions...
1. Why do I get so much chatter? Am I pushing the limits of the machine trying to part off 3/4" steel or aluminum?
2. Can I get rid of the chatter by using a thinner tool? Perhaps make one by grinding a piece of a hacksaw blade (.032")?
3. Does a rear parting tool help?
4. If I clamp down the cross slide on the bed, would that help? Any ideas how to do that (if it's helpful that is...)...
thanks in advance for your thoughts...
tom
PS. I'm posting the same e-mail to the other lists... I'll compose a list of answers as I get them and I'll feed back to this list also...