Homebrew PCBs

In a message dated 26-May-02 20:26:46 Central Daylight Time, 
dwayner@planet.eon.net writes:


> those real inexpensive air power 
> die grinders sold by Harbor Freight?  

Dwayne:  Those have a ¼" collet, so you would have to "DO something" for 
PCB-drills, and I don't know what kind of bearings those things have.  MIGHT 
be OK, at least for a few hundred holes, but no clue.   HOWEVER, I use those 
as "disposable" when malfunctioning tools to "de-bur" and countersink wood 
(for FH screws), and they EAT air at a rate with which a 2 hp compressor can 
hardly keep up!  They also kinda REQUIRE oily air, or, at least oil put into 
their own intakes from time to time, to keep them properly lubed, and   the 
resulting oil-mist-spray is NOT good news for a clean and dry 
to-be-chemically-treated PC-blank!!!!!    But good thinking, anyway! 


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