slipping collet!!!

[feinddj]

I just picked up a pair of ER25 Ball Bearing Collet nuts. They are supposed to have less vibration and a better hold. They are from Maritool. They seem to work just fine and if anything, I have had to back off on tightening as they lock down so smoothly that you don't realize that you've tightened a bit too much

[Burkhardt]

I just picked up a pair of ER25 Ball Bearing Collet nuts. .....

Me too, but for ER20 and had it shipped from that place in the UK that was mentioned here in another thread. I also positively impressed so far. Not sure about better vibration, but I noticed a little better runout.

[gibl5s]

Hey thanks so much guy's. Makes me feel that I'm not paddling this boad all by myself.After changing the collet AND the bit and after 9hrs.48min of cutting we have a great looking frame with a leaf texture in the center. When I started this I had 6 hairs in my head now Im down to 3 and they are loose ha.
Thanks again

[mikek]

Perry, I have had that happen. I use a PC router and was using a CMT extension and it fell out. Scared me a bit! I came to the conclusion that it just wasn't tight enough. I now use an offset wrench to tighten the PC collet. I keep both of these in a conversation only drawer for show and tell. You can see from the picture where it spiraled out at 12,000 RPM.

[kerrazy]

Is it a true Spindle, or is it a Router?

I have seen with routers, where heat from wrong feed and speed rates will cause glazing on the collet from dust particles. This will prevent your cutter from being secured properly.

[rhfurniture]

Brady, I don't think it has to cost an arm and a leg. I just cut a square hole in a standard er25 plate spanner and use a standard cheap automotive square drive torque wrench (I hold them together with rubber bands!). I tighten to about 2/3 of recommended which is still way more than what I used to do by hand and guesswork, so it doesn't have to be deathly accurate, and it works fine.

R.

[Brady Watson]

Roger that Ralph. I'd have no trouble fabbing one out of mild or SS, but most wouldn't have a clue how to broach a 3/8 or 1/2" drive into it. These kids today...

-B

[kerrazy]

Mike,
I also recall a significant scare using a quick change collet on a router spindle.
Only used it once and never again.
Still have it sitting in a tool drawer.