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I want to do some lite milling with a drill press and XY vice using plastic. I am looking for a cheap easy to machine plastic. I have dealt with these guys for aluminum, but not plastics. I don't know much about the different types of plastics yet. I see a white plastic in many projects that is often milled, but I can't find the name of it.

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Delrin or nylon are easily machinable. –  Wayfaring Stranger Mar 19 '12 at 15:03
Delrin is the classic. Depending on your application, Machinable Wax may be useful as well. –  Brad Nov 6 '12 at 23:13

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