[sdiy] Making holes in plastic

[harrybissell]

12ga shotgun ???   :^P

The punch is caleed a Greenlee punch (brand name).  It will work in
some plastics (polycarbonate) and not well in Acrylic.

You still need to drill the center hole accurately.

There is a drill bit called a 'brad point drill' that has a little point
in the middle
and is cut the reverse direction (the V faces the work).  I'd use these
for plastic
or aluminum.

You might have some success with a step drill (unibit) if you allow lots
of time to
keep the bit from getting hot...

H^) harry

Fiercefish wrote:

> I have a project where I need to make some very neat holes in a
> plastic enclosure, drilling is not an option due to the size of the
> holes (about 12mm/ half inch) and I don't have a drill press, also the
> placement of the holes needs to be very accurate. Which would be a
> good method?I was thinking of those devices that go each side of the
> material and are pulled together by means of tightening a bolt,
> drawing the two parts together, but I can't remember what they are
> called nor where I have seen them. Any other suggestions or tips
> welcomed! Thanks FF
>
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