View Single Post
  #7  
Old 17-04-2012
Lee24h's Avatar
Lee24h Lee24h is offline
Senior Member
 
Join Date: Apr 2010
Location: Northampton
Posts: 758
Default

Brass and copper alloys are self lubricating hence why you use copper grease use no coolant and medium pressure on a pillar drill plus brass is not hard its just a dense material hence why its used as weights
Reply With Quote