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I would like to make a bunch of small circular discs out of 3 mm (1/8 inch) expanded pvc foam board or sintra. I can provide the material and computer aided design format file. Anyone interested? Thank you.
Success is the progressive realisation of a worthy ideal. —Earl Nightingale.
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@Irv - I have a suspicion that Dennis - @cdennyb - may well have, but I haven't seen him on the forum for a long time - and I doubt he'll see the notification. I have him friended on FaceBook - I'll draw his attention to this -
Cheers, Bill
I seriously recommend not copying my mistakes. D'oh - 
Please make your own, different mistakes, and help us all learn :-)
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Irv, I make a lot of stuff with my laser, a 60w CO2 unit. Making anything from PVC with a laser is a no-no in the laser community. It off-gasses and the chlorine is pretty nasty stuff. Can't see it but it sure does corrode the metal surfaces quite rapidly.
Now, making those from acrylic or wood ply is a piece of cake. If that's an option, then I can probably help you out.
Here's a pic of what cutting PVC for one day did to a laser unit.
Let me know.
"If you practice with your hands you must practice all day. Practice with your mind and you can accomplish the same amount in minutes." Nathan Milstein
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Well @BillyG and @cdennyb , it looks like I may need to go another direction in cutting this plastic. I am currently making a disc cutter set. My goal is to make my own “indestructible” clarinet pads that would be immune to pad bugs (the same critters that eat bow hair). 
Success is the progressive realisation of a worthy ideal. —Earl Nightingale.
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I trust you've exhausted the idea of using traditional wadding punches? They've worked well for centuries, making small, circular pads from soft material.
On a more commercial scale, water-cutting would work well; are there any 'maker' clubs in your district? Such groups sometimes club together to buy machinery which individuals couldn't justify.
Peter
"It is vain to do with more that which can be done with less" - William of Ockham
"A crown is merely a hat that lets the rain in" - Frederick the Great
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These insects seem to be unique to America - bad luck!
My natural approach would be 100% traditional and I'd replace the pads when need be, retaining instrument maintenance skills. And I'd buy a can of bug spray.
Andrew
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