Originally Posted by raving-monkey
I'm quite confused about all this lathe malarky.
Well not the actual lathes but the speeds you run them at.
I run lathes at work, day in day out and generally speeding, on a smaller diameter and a softer material you run them at a far higher speed.
So if your running them at 500rpm for example, i cut steel at 700-1400 depending on the diameter.
I guess there must be a reason for running them slower...mainly because the lathe isn't fixed to a solid object? Or the belt would slip on the arm?
it is an interupted cut for starters and the work piece is not clamped solid enough to turn higher rpm's without casuing chatter.it is similar to running a long shaft in a cnc or engine lathe without a live center.