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Get Subpixel Printing With a DLP 3D Printer – Hackaday

by • July 25, 2016 • No Comments

A DLP 3D printing device works by shining light into a vat of photosensitive polymer via a Digital Light Processing projector, curing a thin layer of the goo until a solid part has been created up. Generally, the resolution of the print is determined by the resolution of the projector, and by the composition of the polymer itself. But, a technique posted by Autodesk for their Ember DLP 3D Printer may allow you to fundamentally anti-alias your print, additional increasing the effective resolution.

The technique works by via grayscale anti-aliasing on the image projected for every layer. The dimmer gray light results in the polymer bringing longer to solidify. So, if it’s utilized in key points, it can smooth out the print along the edges. It is much like to how TrueType fonts, and other graphics display techniques, visually smooth out the edges of fonts and graphics in order to donate the impression of smoother lines.
Now, the Autodesk Ember is a proprietary 3D printing device – a thing we are not too fond of around here. But, there is not any reason this technique mayn’t be utilized on other DLP 3D printing devices. Even ones you’ve created by yourself. As easy as this tweak is, it’s somewhat safe to expect it’ll soon become a somewhat standard output version.
[via reddit]


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