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Did you tape it off?
Or use a wooden block to drill through?
Studio: https://www.voltperoctave.com
Music: https://www.euclideancircuits.com
Me: https://www.jamesrichmond.com
Drill barely engaged before it shattered ....
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I use offcuts of ply wood or mdf.
This is where a pillar drill comes into its own though- because you can clamp everything down.
Were you using a HSS or brad point bit?
Studio: https://www.voltperoctave.com
Music: https://www.euclideancircuits.com
Me: https://www.jamesrichmond.com
My jig-saw was creating small chips, but when the supporting part got thin (ie. when I got close to an edge) - that wanted to shatter too and did - but I just got lucky with the outline I think. Conversely I had to make an indent for the floating pickup - that was a doddle with the Dremmel and a grinding stone - perfect !
2mm Acetate/Cellulose is bendier so should be more tolerant.
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Studio: https://www.voltperoctave.com
Music: https://www.euclideancircuits.com
Me: https://www.jamesrichmond.com
Helps if you works slowly with acrylic too- once a bit grabs that is it.
You can get special plexiglass drill bits which eliminate the need for a pilot hole.
I've always used brad point bits and a guide block and never had a problem.
Studio: https://www.voltperoctave.com
Music: https://www.euclideancircuits.com
Me: https://www.jamesrichmond.com
I've got a spare laminate sheet (4 ply) tortoise, then white/black/white - not sure what it is made of tbh - might experiment a bit more over the weekend with metal/wood jig-saw blades, and drill bits & blocks
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Studio: https://www.voltperoctave.com
Music: https://www.euclideancircuits.com
Me: https://www.jamesrichmond.com
In general, for plastics, use very sharp cutters - good quality and as good as brand new, preferably reserved for plastics (or at least soft materials - don't use drill bits that are also used on metals). Relatively slow rotation speed and feed rate. Let the sharpness do the work - the rotation speed and feed rate should be such that thin slivers of the stuff is removed with no effort.
And, as mentioned, put a sacrificial support block/sheet underneath it.
Nomad
Nobody loves me but my mother... and she could be jivin' too...
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