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Topic: Help! Cracking & bubbling pastels after glazing  (Read 772 times)
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« on: October 23, 2013 05:38:28 PM »

Yesterday I made a small cat and colored it with pastels for the first time. It had baked fine and after it had cooled I painted on the first layer of glaze (I used Sculpey Gloss glaze). Not long after I noticed that it had started to bubble on the head around the ears and on the back of the head and one of the sides it had peeled back (think of old paint peeling) and it flaked off completely. 

I'm totally stumped. I've never used pastels before but I have used this glaze so I cannot figure out what went wrong. Could it be the pastels? I just picked up some cheap ones at the craft store the other day as I read that you didn't need a specific brand besides it being chalk pastels.

Any help would be appreciated!
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« Reply #1 on: March 04, 2014 02:02:01 PM »

Perhaps because Polymer clay is petroleum based plastic the paint may not have been able to adhere properly? Acrylic paints work well with poly clay as they are pretty much plastic!  Smiley
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Fawa
« Reply #2 on: November 15, 2016 04:42:23 AM »

Maybe the glaze is not reacting well with the pastel, I used polyurethane mixed with eyeshadow to create a "paint", and it took forever to fully cure, and I think its still a bit tacky, so won't be doing that again!  (although I still need to check its been 3 weeks so far so I'll report back)...But polyurethane on just polymer clay is perfect, I think also with chalk pastel or eyeshadow baked in first, but I wouldn't go over my creation with a brush of polyurethane over something that has blush pastel or shading for example, it would most likely rub off.  I'd rather try using a spray can glaze like PYM.
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