Originally Posted by
soofle616
Well my tests with the 3/8 lakeshore carbide tools and 1018 steel finally happened yesterday and were a pretty miserable failure. I honestly don't know what my issue is. 250SFM on one tool 450 on the other. .25DOC, .05 WOC, .0016ipt. Worked fine for a couple passes than halfway through a cut starts screaming like a wounded pig. Cutting edge and corners appear to be fine but the as before, I can't get a cut without the tool screaming at me once it's happened the first time. 1/4" tools are on order now and I will be testing using the exact same recipe as saunders has posted as well as some of the postings here so hopefully i find something I can actually work with. This whole process has been truly discouraging so far. While I wait for the new tools to arrive I will be looking at my setup to see if I have something going on either in terms of loose fixturing, tool runout, or something because I just don't understand why I can't seem to make a chip in mild steel with this machine. I also have a microscope on it's way so i can better inspect the tools after they start chattering. Maybe that will give me some clue as to what is going on.