-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of
fred jones
Sent: Monday, November 29, 2004 12:05 PM
To: piclist@mit.edu
Subject: [OT] Panel Punch Question

Hi,
I have been searching with no solution, hopefully someone here has already
tackled this.  I have a small Serpac case that I need to drill holes in.  Of
course it is nearly impossible to make the holes stay on center from the
beginning of the pilot hole until you step up to the final size you actually
need.  Then the controls are off center or out of line with each other.  I
read on another forum where someone said they used a "self centering hand
punch" but I can't find anything suitable.  Has anyone found anything?  This
case is plastic so it doesn't need to be too heavy duty.  Thanks for any
help.
FJ


In addition to the other excellent ideas given by others, I find better
quality holes in thin plastic using a "Unibit" stepped sheet metal drill,
compared with the standard drill bits for drilling metal.

For small holes (under 1/4") near an edge, I second the use of a
Roper-Whitney hand punch -- it yields clean holes.

Jack

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