Chatter when Turning casein

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Mylowill

Member
Joined
Sep 15, 2017
Messages
9
Hello All,

Bought a bit of classic casein from a supplier here in the uk,

love how it looks but I do get a quite a lot of chatter, more so at the beginning as I like to turn my blanks to a cylinder before cutting and drilling etc.

Just after some pointers in an effort to reduce the chatter have tried various speeds, tools and cut sizes.

Many thanks,

Myles



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jttheclockman

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Joined
Feb 22, 2005
Messages
19,082
Location
NJ, USA.
Sharp tools, I have used a skew, and approach from the end and work toward the center a little at a time. Do not try to turn the entire blank round as in passes down the entire length. Do this from both sides. That is how I did the very little I did have. I use the faux stuff now.
 

LK&T

Member
Joined
Dec 1, 2020
Messages
139
Location
Sedro Woolley, WA
If you're using a pen mandrel, you might try turning between centers instead. That'll get you a more rigid setup to fight vibration. Other than that, I can't add anything that JT didn't already.
 

penmkr

Member
Joined
Dec 10, 2020
Messages
2
Location
Littleton NC
Sharp tools, I have used a skew, and approach from the end and work toward the center a little at a time. Do not try to turn the entire blank round as in passes down the entire length. Do this from both sides. That is how I did the very little I did have. I use the faux stuff now.
I use a 1 1/4" oval skew that's razor sharp. I use it point on the bottom, heel on the top as this reduces grabbing.
 

Mylowill

Member
Joined
Sep 15, 2017
Messages
9
Many thanks for the responses,

Will give them a go, I am turning between centres but have today had a bit better success by drilling each end with a center drill to give a matching 60*.

The skew is a favourite but normally use a planing cut so will try heel on top along with working to the center.

So far the best results Ive had was using a shearing cut on cheap carbide tool - detail or diamond. Have always struggled to get on with the carbide tools, always been a bit disappointed with the finish and the control or lack of in the cut.


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