Quote:
	
	
		| Originally posted by Jordan Baker 
 
 On a side note, can anyone guess what these are for?
 | 
	
 Likely for the brass Bren mount castings that Rob was making up.  
Personally, I would just melt a drill bit through it on the old drill press. It will get hotter than h***, but the metal will give way before the drill bit would. I only use the golden coloured drill bits (cobalt) ...gave up on regular high speed steel ones years ago.  Seems like you spend more time sharpening them than using them.