[TheForge] Drilling hard metal

[Chuck Robinson]

I generally find that using a good quality carbide drill bitt,  a slow 
speed, light pressure and Rio Grand Burr Life Lubricant does the  job for 
me.
Using too much pressure and speed without a proper lubricant will work 
harden the metal in the drill zone to the point that it will even eat 
carbide drills.
Chuck
----- Original Message ----- 
From: "Bruce Freeman" <FREEMAB at pt.fdah.com>
To: <theforge at mailman.qth.net>
Sent: Thursday, April 20, 2006 11:44 AM
Subject: Re: [TheForge] Drilling hard metal


> Why not use the same trick used for drilling rock and glass:  An
> abrasive material driven by the end of a copper rod in a drill press.
> Can't get any cheaper than that.  I haven't tried it myself, though.
>
> Bruce
> NJ
>
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