Hi, I'm a hobby machinist, general experience in aluminium and steel. I have to engrave some text into 316 stainless steel sheet with a 1mm carbide ball nose slot drill. They are very expensive, and I have snapped two, now I only have one left. What are your thoughts on speeds / feeds?
Mill is limited to 1600 RPM, feedrates recommended by the manufacturer is 160mm per minute, but the slot drills snap off when I try and engrave at 50mm / minute, I wasn't brave enough to try 160mm / minute. what am I doing wrong? Can someone please help?
Thankyou, GM.