[TheForge] Re: was orifice size now drilling copper

[Roy Wilson]

On Tue, 16 Apr 2002 08:44:53 -0400, Barking Crow wrote:

>Hey, 
>
>How do you keep it from work hardening?   Thanks,   Jeff Valentine 

  Slow RPM, lots of coolant, steady, constant pressure on the bit. 
Same as with steel, but you may want to spin the bit even slower
than with even an air-hardening steel, as
copper/brass/bronze/aluminum can get "grabby" as all get-out if you
try and cut too fast.  



Roy Wilson
General Operations Director
Zanzibar Internet Land Line Administrator

<Roy@Wilson-Eclectics.com>