How to make a Ring Mandrel

[PJs]

Thanks Brian. Like both your Lathe Dogs. Simple, quick design but a bit hair raising fab on the metal one. As for the chatter in the middle; It could be a lot of things like Paul indicated and agree about the HSS or Cobalt. What I noticed was your tool grind didn't have much of a radius nor back rake. I have found on CRS to give a bit more radius and cock the QCTP back a bit to move to about ~3-5º into the radius tends to pull the chips a bit better and adding a shallow back rake allows them break a bit sooner.

CRS has always been tough for me on the Peanut and gone through a lot of iterations to get it the best I can. Mr. Pete had a video a while back about finish passes using a

for difficult to machine materials. It's only for final passes of a thou or two but works like a champ and uses a lot less elbow grease than lots of grits of paper to get a finish like this tool needs.

Thanks for sharing and treats for Zeke! ~PJ

**Not sure why the YT videos are now embedding rather than just being a link??