| Lost Details in FUD [message #34631] Tue, 20 September 2011 06:11 UTC |
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Not quite sure where this should be posted, but since in the end it is a design question - this seems as good a place as any.
Basically, I have an object which I had printed. The object has a mostly flat surface. However at various locations on that surface there are spheres. Each sphere has a diameter of 0.3 mm and it is sunk half way into the surface (so that 0.15 mm protrude from the surface).
When I had the object printed most of these spheres seem to have not printed. Some did, however it seems that there really isn't a specific reason why a particular sphere printed while a different did not.
What size does a detail actually have to be in order to be printed reliably every time in FUD?
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| Re: Lost Details in FUD [message #34645 is a reply to message #34631 ] Tue, 20 September 2011 10:10 UTC |
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Not as sure as here, but it is also probably a model issue, like inverted normals.
Try to check the rendering (2D ou 3D visualisation) in the object page: what you see there is usually what you get.
So many things to design, so little time...
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| Re: Lost Details in FUD [message #34683 is a reply to message #34631 ] Tue, 20 September 2011 14:38 UTC |
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These are rivet/bolt head details?
I think a 0.3mm sphere is always going to be problematical because it is on the limit of what is possible. If the centre of your sphere lines up with the printer's pixilation then it will print, otherwise it probably won't. I would tend to use something like a 0.3 diameter by 0.2 mm cylinder in this sort of situation once it is printed and finished it will look visually acceptable.
Bill Bedford
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| Re: Lost Details in FUD [message #34698 is a reply to message #34631 ] Tue, 20 September 2011 16:58 UTC |
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Do you have images of the problem area? I know details that small will probably be hard to photograph. This may be a question for service (service@shapeways.com) to see were the issue is.
The Mad Moder
michael@shapeways.com
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