Re: machining copper

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Malcolm Watts" <m.j.watts-at-massey.ac.nz> 

On 15 Jul 2004, at 12:08, Tesla list wrote:

 > Original poster: Jim Lux <jimlux-at-earthlink-dot-net>
 >
 > I just received an interesting and useful piece of machining lore.
 >
 > When machining copper (which is difficult to machine):
 >
 > sharp tools
 > Fast speeds
 > condensed milk as a lubricant <<< this was the new thing...
 >
 >
 > Think about it... a colloidal dispersion of a high temperature oil
 > (butter fat) in a water base.
 >
 > Stinks, goes sour, etc., but apparently is the "miracle lube" for
 > copper cutting.

Sweetened or unsweetened? We get both in NZ. Just kidding (unless of
course it matters! :)

Malcolm