Colleges
I am starting my second adventure now of building a CNC Metal lathe, I will post adventures of that as they start to unfold.
At the moment I have a question to all the lathe workers out there regarding tooling. I purchased a 11x30 machine 1hp quite modest, and a little on the light side. The machine is manual operated and slowly as I make parts I will covert to NC.
I have been told and have read, that lathes such as mine will operate nicely with positive rake tooling, my dilemma or my question is can you use a tool holder with negative rake position with say a positive rake tool insert?
Seems like all the decent stuff or decently priced holders are all negative rake in the 1/2" 12mm size. I have found some holders I like that are 5Deg. neg but if I use a 7deg positive insert wont that now become 2deg positive? Or am I looking down the barrel of a whole heap of pain.
Please don't come back with with I should use HSS, I don't wont to go there at present, maybe a couple of years down the track from now. Tooling will be all holders and carbide inserts for now.
Thanks
Katoh