Material question

Discussion in 'Software and Applications' started by Sepia100, Oct 9, 2012.

  1. Sepia100
    Sepia100 New Member
    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 :D
     
  2. Sepia100
    Sepia100 New Member
    I think i know already, It got to be ceramics

    :cool:
     
  3. virtox
    virtox Active Member Moderator
  4. Youknowwho4eva
    Youknowwho4eva Shapeways Employee Community Team
    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.
     
  5. Sepia100
    Sepia100 New Member
    Okay I Uploaded my model! Do you think 2,5 mm wall tickness also be strong enough?

    have any experience with it?

    Tnx
     
  6. virtox
    virtox Active Member Moderator
    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
     
  7. Sepia100
    Sepia100 New Member
    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?
     
  8. mkroeker
    mkroeker Well-Known Member
    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.