Originally Posted by
mattpatt
Interesting what you say about the chuck exploding.
The chuck is rated up to 4200rpm (marked on the chuck), but I've only hit a max of 4000rpm while in action.
I must confess that I did run it up to 5000rpm and put a finger on the machine....no vibration.....so it's well balanced (well enough anyway).
The chuck's 100mm OD, so at 4000rpm that would give a peripheral speed of 21m/s.
4200rpm would be 22m/s.
Does anyone know at what peripheral speed it will explode?........I could keep pumping it up until it did, but can't really afford to:devious:
As for buying a lathe, yes it's in the plan, but only when we have a spare $50k, which unfortunately won't be this week.
Cheers,
Matt