Nope! If you use an ER collet tp hold and end mill, you will most likely reach a state where the endmill will pull out and probably ruin your work. What you probably need is something like a proper collet chuck such as a Clarkson one which will also provide further security having a threaded end to lock things down tight.I was wondering if there is a reason for using ER collets with end mills? Does it reduces runout because it has more contact points?
If 'If's and an's were pots and pans, there would be no room for tinkers'If one has a 20,000 RPM spindle and uses 0.032 end mills then a run out of even 0.001" is going to shake and break the tool.
On a larger end mill a little run out means that one flute may be loaded with 0.005" and the opposite flute is loaded 0.004". Some people would scream in horror, some would just slow down a bit and get the job done.
The OP was concerned about run out.80+ years and have never found need of 20, 000 RPM.
GoldieIf 'If's and an's were pots and pans, there would be no room for tinkers'
I've been in this game- and it is a game for nigh on 80+ years and have never found need of 20, 000 RPM.
It's a hobby- end of story?
Hello BaronHi Bazzer,
I must confess I'm curious as to what you would do with 20K spindles and why that kind of speed is needed !