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Topic: So is there a reason why my owl decided he wanted to look like a planet?  (Read 3229 times)
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TAddictedAngelT
« Reply #10 on: July 13, 2006 10:00:28 PM »

Oh, and I baked two different things at once, and the owl was the only thing that bubbled. And I didn't add anything to the owl, its shiny because of the werid bubbling.
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Diane B.
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« Reply #11 on: July 13, 2006 11:10:32 PM »

Quote
Yeah I think it was too hot. It was set at 250 F.


Unfortunately, 250 degrees isn't too hot, it's actually not hot enough to thoroughly cure the clay. The temperature for baking all Polyform clays (including Sculpey III) is given by the manufacturers as 275 degrees, but if the clay is thin or the item is really small, you don't need to bake it as long (perhaps only 10-15 min.) 

If you weren't using an oven thermometer though, it's very possible that the temp registered on your oven dial wasn't the same as the temp actually in the oven, or that you had that particular clay in a hot spot in the oven (random hot spot, or too close to the coils, wall, or even a metal or ceramic baking tile too close to the bottom coils). The fact that your clay didn't darken/scorch and the other item baked okay would seem to indicate that the temp wasn't too hot though (was it also Sculpey III?).

Sculpey clays do darken more easily than other brands at that heat and Sculpey used to recommend lower temps, but they don't any longer because the strength of the baked clay suffers, etc. 

Quote
And there wasn't any bubbles to begin with. It started bubbling the first 5 minutes...

If there is air in the clay, or moisture in the clay, you may not see anything at all when the clay is raw.  When it's heated, however, the air expands or the moisture turns to steam and expands, and then you'll see the bubbling. 

On the page I suggested, there's one hint that you might try first if you want... and that's to let the clay item sit out overnight before baking to allow any air or moisture to work its way out of the clay to some extent.


Good luck,

Diane B.
GlassAttic....polymer clay "encyclopedia" http://glassattic.com/polymer/contents.htm
little bit'o photosharing: http://pg.photos.yahoo.com/ph/dianeatglassattic/my_photos 
« Last Edit: July 13, 2006 11:12:14 PM by Diane B. » THIS ROCKS   Logged

POLYMER CLAY "ENCYCLOPEDIA" 
http://glassattic.com/polymer/contents.htm
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kaleesi
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« Reply #12 on: July 14, 2006 04:05:43 AM »

When I said your oven might be too hot - I was thinking of mine. I must have the world's crappiest toaster oven because I have to cook everything about 50 degrees or more cooler than recommended or else the top burns and the middle doesn't cook -
when I bake clay I get the bubbles too even though I am using a clay thermometer and it shows that the temperature is perfect. I think my top heating element is too hot or something?
I think I really have to look into a better toaster oven...

Any recommendations?
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I have a gorgeous granddaughter Smiley

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Diane B.
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« Reply #13 on: July 14, 2006 08:56:01 AM »

Quote
when I bake clay I get the bubbles too even though I am using a clay thermometer and it shows that the temperature is perfect. I think my top heating element is too hot or something? I think I really have to look into a better toaster oven...Any recommendations?

kaleesi, you can check out the Ovens subcategory on my Baking page for some recommendations for ovens, but toaster ovens change so much evern from model to model that it's still a guessing game.
http://www.glassattic.com/polymer/baking.htm

However, you might want to try moderatng the temp in your whole toaster oven (using heat sinks, etc.), raising your item and not putting it directly on metal or ceramic, as well as tenting or completely enclosing it before buying a new oven though, if you don't want to spend the money.  The fact that you're clay is not darkening or scorching though probably means that it's not the temperature that's the problem, but one of the other things.


Good luck!


Diane B.
GlassAttic....polymer clay "encyclopedia" http://glassattic.com/polymer/contents.htm
little bit'o photosharing: http://pg.photos.yahoo.com/ph/dianeatglassattic/my_photos

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POLYMER CLAY "ENCYCLOPEDIA" 
http://glassattic.com/polymer/contents.htm
few of my photos
http://s96.photobucket.com/albums/l163/DianeBB
(had to move them from YahooPhotos, so many now without captions)
teapotdnky
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« Reply #14 on: July 14, 2006 03:52:49 PM »

Did you have lotion or anything else on your hands? I have wet my clay and rolled it, that caused bubbles. Also, I have used some lotions and had my clay bubble after I had applied it.
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TAddictedAngelT
« Reply #15 on: July 15, 2006 02:52:40 PM »


Did you have lotion or anything else on your hands? I have wet my clay and rolled it, that caused bubbles. Also, I have used some lotions and had my clay bubble after I had applied it.
No, I didn't have lotion or used water. I did work at it for the longest time though, so I'm sure thats what caused the bubbling now.



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TAddictedAngelT
« Reply #16 on: July 15, 2006 02:54:34 PM »

Diane B. - Thanks for your posts, they really helped me! I think letting it sit overnight is a good idea, I'm going to have to do that next time.
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TAddictedAngelT
« Reply #17 on: July 15, 2006 02:56:15 PM »

When I said your oven might be too hot - I was thinking of mine. I must have the world's crappiest toaster oven because I have to cook everything about 50 degrees or more cooler than recommended or else the top burns and the middle doesn't cook -
when I bake clay I get the bubbles too even though I am using a clay thermometer and it shows that the temperature is perfect. I think my top heating element is too hot or something?
I think I really have to look into a better toaster oven...

Any recommendations?

Haha I have the worlds crappiest toster oven! Everytime I bake anything, including food, the top part always gets burned and the inside is not heated whatsover. I blame my mother. Haha. And it always burns our food. Even if we leave it for the shortest time, it still gets burned. I have no idea whats wrong with it.
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kaleesi
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« Reply #18 on: July 16, 2006 04:15:32 AM »

Diane B - I just wanted you to know the tenting really helped Smiley
I put one index card under it and then made a tent of another and that took care of almost all my bubbles!

Thanks for always being there and trying to help people with their problems!!!!!!!!!!!
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I have a gorgeous granddaughter Smiley

Not allowed to craft without supervision Wink
God is big enough.....
Diane B.
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Posts: 5061
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


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« Reply #19 on: July 16, 2006 04:07:44 PM »

Quote
I just wanted you to know the tenting really helped

Great!  A lot of those little problems can be such a relief to get rid of!!!!!!!!!!!!!!!



Diane B.
GlassAttic....polymer clay "encyclopedia" http://glassattic.com/polymer/contents.htm
little bit'o photosharing: http://pg.photos.yahoo.com/ph/dianeatglassattic/my_photos
THIS ROCKS   Logged

POLYMER CLAY "ENCYCLOPEDIA" 
http://glassattic.com/polymer/contents.htm
few of my photos
http://s96.photobucket.com/albums/l163/DianeBB
(had to move them from YahooPhotos, so many now without captions)
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