- Joined
- Dec 3, 2014
- Messages
- 778
Great write up, 12" long chip strings obviously are not perfect but at least they break and are not rats nesting and whipping you to death. .010 feed sounds fine, maybe bump the speed up a hair or try a little deeper cut, sometimes a change of just a couple percent in speed, feed or depth of cut will make the difference. I know a guy who does very fine work, he sometimes puts the tool a hair below center in an effort to set up a repetitive job so to get a better chip or finish. On heavy roughing cuts I sometimes pause the feed to break the chip and let the insert cool a second, I don't run flood. IMO CNMG is one of the easiest inserts to dial in for good chip breaking. I have been happy with Korloy ones I get off ebay out of China, a couple bucks an insert either polished for Alum, or coated for steel.
For taking huge roughing cuts on a lighter weight lathe, nothing beats a cobalt HSS bit with positive rake and some back rake, tan to light blue chips. With low cutting forces you can really go to town on depth of cut.
Great photos in your post, excellent work
For taking huge roughing cuts on a lighter weight lathe, nothing beats a cobalt HSS bit with positive rake and some back rake, tan to light blue chips. With low cutting forces you can really go to town on depth of cut.
Great photos in your post, excellent work