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Re:How to design parabolic, hyperbolic, elliptical reflector... by noonespecial on Saturday July 30, 2016 @03:16PM (#12194281)
I've had outstanding luck with this paint (1).

Print your model in ABS. Smooth it by putting it in a paint can on a little stand with some acetone soaked rags below for about 1/2 hour. Paint with some of this paint. You will be amazed.

(1) https://www.amazon.com/Krylon-1010A-Premium-Metalic-Original...

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