Posted by Neil Wyatt on 09/02/2017 13:37:56:
My experience of small carbide cutters is that you only need to squint at one to make it go >ping<
If you keep snapping them I'd be tempted to stay with HSS.
Neil
I agree – I have switched back to HSS in the 3mm size – and these guys do 50 for GBP20 **LINK**
So far, 2 blunted, none broken, running them at 10,500 rpm in Al