3D Printing with a Video Projector

3D Printing

This is an interesting method of printing in 3D similar to Stereolithography. Instead of using the typical photopolymer resin. This method uses a basic video projector to polymerize a fluid.

“In this lithography experiment light creates free radicals from phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide which induce polymerization of 1,6-hexanediol diacrylate. Light is supplied by a computer projector which shines the pattern for one layer at a time. After each layer, the elevator is slightly lowered and the process is repeated. A dye (Sudan I) is included to prevent light from penentrating much below the surface of the solution.”

The process in serious needs of some steppers motors, but they manage to get some pretty detailed parts.  Normally Stereolithography uses UV lasers to cure the material by rapidly scanning the image onto the surface.  This images an entire layer at a time.  Go to the web site to see some videos (warning Quicktime required)

3D Printer

3D Printing

3D Printing

via hackaday

images from wisc.edu

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