PDP 8 panels. Feedback

William Donzelli wdonzelli at gmail.com
Tue Oct 27 07:12:43 CDT 2015

There are special bits for plastics, and they work quite well. Regular
bits are troublesome on most plastics.


On Tue, Oct 27, 2015 at 12:38 AM, Chuck Guzis <cclist at sydex.com> wrote:
> On 10/26/2015 08:54 PM, wulfman wrote:
>> To effectively drill in plastics you need to run the drill press on
>> the highest speed you can and use a freshly sharpened drill bit.
> If this is Perspex/Plexiglas, I've had great results with a good sharp
> Forstner bit in my drill press at medium (say 750 RPM) speed and a not-too
> aggressive feed..  No melting, just lots of crumbly shavings. I've done this
> with sizes down to about 1/4", but no smaller.  When you're almost through
> the material, turn it over and complete the hole from the back side.   Very
> clean edges, with no chips at all.
> --Chuck

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