Help Please,, Niobium!! :(
It has been almost 10 years sense I have had to cut niobium. The coolant we used cost almost $1000 per gallon and a lot of broken tools before we got it right. I never thought I would see this stuff again. Now,, here we are today. New shop,, new ideas. OMG. Here I go again. I have a few questions for the people that have run niobium before. To start,,, what coolant did you use. This shop is not going to go for 1k per gal. I have Hangsterfer's hardcut in the machine now. I know that will have to go. I started with that last time. What SFPM do you use. I think I used about 300??? If I remember right 2flt endmills about 50* worked the best??? Any info will help. Thanks for your time.