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A comment on How to design parabolic, hyperbolic, elliptical reflectors for 3D printing. Parent comment

Re:How to design parabolic, hyperbolic, elliptical reflector... by lutorm on Saturday July 30, 2016 @01:50PM (#12193915)
Obviously it's for a metal 3d printer...
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Re:How to design parabolic, hyperbolic, elliptical reflector... by AlexTes on Saturday July 30, 2016 @02:03PM (#12193969)
I don't think so. The cost would be extremely prohibitive. It would be far cheaper to print it in plastic and then add some reflectie coating.
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Re:How to design parabolic, hyperbolic, elliptical reflector... by sgnelson on Saturday July 30, 2016 @11:34PM (#12195628)
Most metal 3d printers simply don't have the surface finish to make this feasible, never mind cost (it'd be ridiculous).
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Re:How to design parabolic, hyperbolic, elliptical reflector... by lutorm on Sunday July 31, 2016 @12:28AM (#12195739)
I guess i should have added a ;-).

Although the laser sintering printer downstairs produces quite nice surface finishes. Not good enough for an optical mirror, but definitely good enough for mm-wave antennas.

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