[sdiy] plexiglass panels for modular?

[patchell]

Tim Ressel wrote:

> 3) Drill a pilot hole. Use a 1/8" drill bit and go
> slowly. If it walks, re-center punch and try again.
>
> 4) Drill large holes a bit (pun intended) at a time.
> If you're making a 3/8" hole, first drill 1/8", then
> 1/4", then 5/16", then 3/8". Sounds like a lot of
> work, but it will produce a better hole.

    Another alternative to this is to use brad tipped drills.  I get
mine at OSH (this is in the US).  They have a little point on the end of
the drill that drills the pilot hole, and the rest of the drill is
ground flat, which give you a perfectly round hole in the metal.  Do not
purchase a spade drill by mistake (the description I gave would fit that
as well), these are regular twist drills, just the tip is ground
differently.  I have even reground regular drills to this shape on my
own, but it is a lot easier to buy them alread ground.  Using a brad
tipped drill helps to save a step.

>
> --TR
>
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--
 -Jim
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