After the excitement over the mobile (Android) spectrometer prototype, my nice 3d model printed terribly at Shapeways. It was also covered in a kind of black powder rather than being actually printed in black. I'm going back to PVC (see below) for now but would like to try to improve my 3d printing as well if folks have suggestions.
In the meantime, I cut up the 3d printed parts and reassembled/glued them back together as a workable device which leaves your fingers a little sooty.
Update: Here's a link to the Sketchup file I used: https://publiclab.org/sites/default/files/plots-spectrometer.skp
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Too funny! But that's too bad about the materials. When you mention that it was terrible, was it the precision of the shape low or any other problems other than the surface of the material?
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Sorry, i should've been more specific. It printed each surface, instead of treating my model like a volumetric shape. So the multiple square "tubes" above are actually the inside and outside surfaces of my model, printed as separate parts. The other photo shows that the recessed area to hold a DVD-R slice and attach to a phone is filled in completely solid, rendering it pretty useless. I cut it out and used the flange alone.
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