Extra-Long End-mill - Dangerous or not?

[eranglr]

Hello.

I had recently built a homemade cnc machine.
Currently my spindle is 23,000 rpm router with 1/4 shank.

My question is - do you think I can use this End-Mill (6 inch long) to cut hard wood with? I'm a bit scared that the bit will just "fly" away or will brake during the job.

Any thoughts?

[Geof]

Six inches long spinning at 23,000 rpm???

I do not think that is a good idea. It might run perfectly okay for a while but if the collet was evenly slightly out of true or if the tool chipped so that it was unbalanced you may get bits of carbide flying around.