Quote Originally Posted by magicniner View Post
Brass chips very nicely, you may find you don't get any issues but if you use very localised air you can shift enough chips for holes that depth, I use clip-together coolant pipe with a medical canula needle bonded into the nozzle from the inside,
Regards,
Nick
So you are saying to try 24000 rpm, no peck drilling, blow air and try how fast things could go with that carbide cutter i have?

Quote Originally Posted by Clive S View Post
Boyan Would a 3.3mm drill be better than a 3mm in Brass?
yes, actually i am using 1/8 . was using 3mm on my old flimsy machine cause due to vibrations it was making a 1/8 hole :-)

Anyways i use a spiral pointed machine tap which further drill opens the hole if necessary.