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Topic: Sealants\Protective Coating  (Read 1207 times)
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sugarshoxcrafts
« on: August 02, 2009 12:58:07 PM »

Does polymer clay require any kind of sealants or protective coating after it's baked?  I've been wondering this for a while, and I wanted to know so I can make my sure that my charms have the most protection they need.  If you do need a sealant, would you use Modge Podge, clear nail polish, or an acrylic spray-on sealer?
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Diane B.
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GlassAttic --polymer clay "encyclopedia"


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« Reply #1 on: August 03, 2009 09:20:47 AM »

Since polymer clay is oil-based and is plastic, it never requires a sealer on its own like air-dry clays would.  
Some things that may be added on top of the clay though may sometimes require a sealer to keep them from oxidizing or just from falling or rubbing off.

Some clayers use a gloss sealer** to give their pieces a glossy surface though (a lot of the clayers at Craftster do that, though sealers are much less frequently used in "higher-end" polymer pieces--and for those, sanding and machine-buffing are usually used to give the high gloss, or just a beautiful sheen, when desired).

**of the sealers you mentioned, the only one that's very good for situations of later abrasion/humidity/etc would be the fingernail polish and it would need to be an acrylic fingernail polish... there are definitely better (and/or cheaper) things to use than those when you want a sealer

Check out these two previous messages for lots more about using finishes/sealers (e.g., which are "hardest" so most resistant to scratching, most resistant to humidity even in cases of soaking, UV-resistant, etc... and also which ones are safe to use directly on polymer clay --there's some overlap between those messages, written at different times):
http://www.craftster.org/forum/index.php?topic=190875.msg2005953#msg2005953
http://www.craftster.org/forum/index.php?topic=273974.msg3096293#msg3096293



HTH,

Diane B.
« Last Edit: August 03, 2009 09:56:28 AM by Diane B. » 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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