| Material question [message #55072] Tue, 09 October 2012 07:43 UTC |
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Hi everyone,
Wich materials can I use to make a drinking cup from?
Waterproof and what can be the minimal wall tickness
Thank you in advance 
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| Re: Material question [message #55073 is a reply to message #55072 ] Tue, 09 October 2012 07:46 UTC |
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I think i know already, It got to be ceramics
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| Re: Material question [message #55089 is a reply to message #55072 ] Tue, 09 October 2012 14:31 UTC |
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To add on to what you found and Virtox added, Ceramics is the only certified food safe material. This is because the glazing process is a certified food safe process. So if you us another material, it would be up to you to use a food safe process to make it work.
The Mad Moder
michael@shapeways.com
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| Re: Material question [message #55158 is a reply to message #55072 ] Wed, 10 October 2012 21:01 UTC |
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Okay I Uploaded my model! Do you think 2,5 mm wall tickness also be strong enough?
have any experience with it?
Tnx
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| Re: Material question [message #55177 is a reply to message #55158 ] Thu, 11 October 2012 09:01 UTC |
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The minimum wall thickness for ceramics is 3 mm or more depending on the size:
Min Wall Supported:
If bounding box x+y+z is 120-200mm: 3mm
x+y+z is 200-300mm, min wall should be 4mm
x+y+z is 300-400mm, min wall should be 6mm
And if you want a hollow cavity in a model there needs to be a hole for the "support" material to get out:
Min Escape Hole:
10-15mm diameter
You can read all the details here:
http://www.shapeways.com/materials/ceramics-design-guideline s
- Artist / Engineer / Designer / Shopowner / Volunteer / Moderator -
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| Re: Material question [message #55222 is a reply to message #55177 ] Thu, 11 October 2012 19:51 UTC |
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Thanks for your help didn't notice it before I moddeld a hole in it.
All of sudden it's way more expensive almost twice as much, and the hole is not showing up in all the pictures
Is this normal?
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| Re: Material question [message #55229 is a reply to message #55222 ] Thu, 11 October 2012 20:21 UTC |
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Ceramics is special in that it is priced per surface area, not per volume. (Suggests that
the glazing is an order of magnitude more expensive than the clay).
So adding holes can actually make your model more expensive in ceramics.
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