We control the stepper motors with the RAMPS/Mega/Pololu stack (a bit overkill) and we position the object using the TrinityLabs monorail and GT2 pulleys and belts. [ The funny thing is that it's basically a MendelMax with the top chopped off and a few optics. Here's our setup, we used David SLS software with a Del M110 DLP Projector and a Point Grey machine vision camera. Using a beamer sounds like a good idea, but remember they're made to make sharp images on a FLAT surface. Nevertheless, give it a try, I wish you luck. sharp enough for galanty shows, but not sufficient for this task I guess. To have a sharp lineshadow you need to have the pointiest lightsource you can find, regarding the aperture of the camera the thread will have to be too far away to draw a line smaller than 1mm I guess.Įven the backlight of some tft (which is in fact a very nice lightsource to use for photography for example) draws diffuse shadows. Scanning small parts is almost impossible using a shadowline Viktor. Okay, putti are hard to scan because of numerous undercuts, but that was the only white'ish non glossy object I had laying around (sitting that is ) I scanned some putto with very ugly results and large holes in the resulting cloud, although I scanned 8 different angles the best I could. Most parts I like to have scanned are not paintable for various reasons, Well, paint my 100Euro mouse and than dip it in water to remove the paint.
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