- Joined
- Jan 10, 2019
- Messages
- 1,042
My PM935 is on the way and I need to order tooling. At first, I was considering a power drawbar for the R8 spindle, but then read about the ER-series tool holding system that negates the need. I don't have any tool holders (R8 or otherwise), so I'm not invested either way. Some threads note that it takes a fair bit of torque to tighten the ER chuck. Is this of any concern on a PM935? I realize those threads don't always mention what machine they're breaking spindle parts on when tightening the chuck. They also don't say how many ft-lbs of force they're applying, but I still wanted to ask.
Oh, and which ER-series do you guys recommend? I know there's a lot of ER32 stuff available, but since the cost isn't much more, is going with the ER40 smart? A few posts note that the ER40 can be a pain because it's physically larger and may interfere with the work.
The mill will be used on all sorts of stuff, but mostly smallish (<12") objects that are not too tall, hobby stuff and car stuff.
Oh, and which ER-series do you guys recommend? I know there's a lot of ER32 stuff available, but since the cost isn't much more, is going with the ER40 smart? A few posts note that the ER40 can be a pain because it's physically larger and may interfere with the work.
The mill will be used on all sorts of stuff, but mostly smallish (<12") objects that are not too tall, hobby stuff and car stuff.