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Polymer clay cracking - help!

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  • Polymer clay cracking - help!

    I am attempting to make a jewellery tree with a polymer clay base. Because the base has to be heavy to support the rest of the tree, I made a base out of cement which I then coated with polymer clay and then baked. However my three attempts so far have resulted in cracking. I'm sure it has to do with the difference in temperature between the cement and the clay in the oven, but do you know if there is anything I can do to stop this from happening?
    Jayne
    http://www.folksy.com/shops/Jaykay

  • #2
    I guess the cement is expanding / contracting at a different rate to the clay.

    I would make the clay layer as thick as you can - and then experiment with different baking durations. Try heating the clay really slowing to baking temp and then allowing the heat to ramp down slowly too rather than turning the oven off just lower the temp over the course of half an hour or so.


    Good luck and let us know how you get on
    Emma
    www.ejrbeads.co.uk - unique art beads & more
    www.ejrbeads.co.uk/shop - beads, polymer clay, glitters and inks oh my
    www.facebook.com/EJRBeads - Like me at Facebook!

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    • #3
      Thanks Emma - will give it a try and let you know.
      Jayne
      http://www.folksy.com/shops/Jaykay

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