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Drilling button holes in Plexi/Lexan?

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yaksplat:
Forstner bit for pilot holes and then use a router with a flush bit to make them perfect.

kahlid74:
Having worked with both Plexi and Lexan I will never go back to Plexi, even for the extra few bucks Lexan is.  It's so much easier to work with.

I love forstner bits but when it comes to cutting Plexi/Lexan, the best luck I've had is with hole saw and the Sandwhich method others have mentioned here.  Always worked with no issues.

I love the router/trim idea but to make the whole perfectly round, you'll need to use a bit.  I'm not a fan of spade bits for anything.

kelemvor:
I already have the base of the CP built and such, just looking to add the acrylic on top of it.  I guess I'll get some Lexan and try our my router (if I can find it).

Knievel:
This one bit will allow you plunge(drill) through and then route out the hole..
http://www.leevalley.com/US/wood/page.aspx?p=30184&cat=1,46168,46171\

If you are going to use a router then I would buy plexi. It won't scratch as easily as Lexan and it's cheaper.

If the plexi has a protective covering you can't see through just clamp it to your CP and shine a flashlight up through the holes.
Then you can mark their locations with a sharpie up on top of the plexi and plunge away.

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