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Topic: Sticky after glazing?  (Read 4294 times)
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sweetgeek
« on: July 06, 2012 10:36:18 PM »

I've been using Sculpey brand glaze for over a year, and it's worked great for me. Not a single problem.

But now all of a sudden, my pieces are starting to become sticky after glazing. Then I noticed on the cap the glaze is "a new formula." Which I guess isn't working in my favor.

I have no idea what to do to fix it. I've tried rinsing a piece with water and it didn't do anything.

I will be trying a new glaze asap, but I was wondering if anyone knows what to do to fix the sticky pieces in the meantime? I don't want to lose them, I really want to try and keep them and I don't have a clue what to do.

Thanks!
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Diane B.
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« Reply #1 on: July 07, 2012 11:50:09 AM »

Which "Sculpey" glaze are you using now?  The clear in the jar/bottle Sculpey Glaze, or the frosty-looking Studio by Sculpey Glaze in the plastic bottle (which dries clear, and is just rebottled polyurethane)?

The old version (Sculpey Glaze) was pretty thick and gloppy, especially over time (not so the newer polyurethane one). 

I don't know if they've tried to tweak the old version (which might make it better or worse), or even recently substituted the better polyurethane version for both previous versions, but something like that could be a factor.  Why don't you find an image online of the exact bottle you're having trouble with (and maybe also your older one), so we can see which are apples and oranges:
https://www.google.com/images?q=Sculpey+Glaze

As for fixing the stickiness you have now, if you used one of the clear finishes above and you didn't use anything else on the clay, you could just have a problem with humidity (or cool temps) which will make them take longer to fully dry (which can take up to a week or longer)...a thicker finish will take longer too.
You can try heating the finish though (on the clay item) briefly to speed up that drying/curing and that's often done in general too just to make a finish even "harder."
Check out my answer here (this one refers to rebaking "Future" which is another often-used clear gloss finish for polymer clay, but would apply similarly to the other water-based, gloss finishes)
http://answers.yahoo.com/question/index?qid=20111120211726AADVMeW
more info here:
http://answers.yahoo.com/question/index?qid=20100606134234AAlJaN0
http://answers.yahoo.com/question/index?qid=20120323230957AADW6kU
http://glassattic.com/polymer/finishes.htm > Varathane >> Peeling, Stickiness (...Stickiness)

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« Last Edit: July 07, 2012 11:52:26 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)
sweetgeek
« Reply #2 on: July 07, 2012 02:50:27 PM »

I am using this glaze: http://www.rainbowresource.com/products/004498.jpg
On the cap it says "New Formula." I'm not sure what has changed about it but I don't have an old bottle to compare.

So I put some of the sticky pieces in the oven at 275 and cooked them for 7 minutes. Unfortunately it didn't change anything they are still the same sticky consistency.

What really confuses me is other pieces I glazed the same day are fine, and some are sticky. I don't get how some are fine. It's so weird!

I do have some satin Sculpey glaze as well. What if I glazed them over with the satin, do you think that would coat over the sticky parts?
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Diane B.
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« Reply #3 on: July 08, 2012 02:29:23 PM »

That pic looks like the same "old" Sculpey Glaze (the one many people don't like)...it may have a new formulation but stil be basically the same thing.  The newer version is a polyurethane and should look a little frosty in the bottle, but before it's been in a squeeze plastic bottle and under the Studio by Sculpey name.  So can't really tell.

Btw, the "rebaking" temp is usually 225-250, not as high as you used, and the time (after preheating of course) usually ranges from 5-15 min.  Don't know if that mattered in this case.

It could also be that the particular clay you applied the finish too that stayed sticky wasn't completely cured, or that you put the finish on top of something else that was the "wrong" kind of material and could therefore interact, leaving sticky. 
You also didn't reply about the humidity and temp in the area at the specific times and areas where you were drying (for both) which can definitely make a difference in drying time.  And some of those finishes can take up to a week to dry and "cure" to get past any stickiness.

I suppose it's possible that the "new formula" has some problems or kinks too--wouldn't know about that (most clayers I know won't use Sculpey Glaze--except for the polyurethane one if out of regular polyurethane). 

If you apply a satin finish over another finish, it *could* perhaps seal it if some things were the problem but then you wouldn't have the glossy surface you might want (though could sand and buff and bit perhaps--hassle).
« Last Edit: July 08, 2012 02:30:22 PM 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)
ToniOboe
« Reply #4 on: July 27, 2012 09:18:12 AM »

I recommend using future floor wax for glazing polymer clay.  I gave up using the Sculpey stuff and if I'm not buffing my beads for shine, then I just use the Future.  It comes in a huge bottle for about 4 bucks, so it's pretty cheap, too.  I use 2 coats for a high gloss. 
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13anana
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« Reply #5 on: October 22, 2012 11:50:06 AM »

Yeah I had the same problem with the Sculpey Glaze. Items glazed on the same day, some would be fine and some would end up sticky. It's quite odd and I really don't know what causes it. But I decided not to take a chance with it anymore and moved on to Varathane Water-Based Polyurethane, Gloss Finish. So far it's been wonderful. I thought I was the only one that had that problem with the Sculpey glaze. XD
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tiffi_333
« Reply #6 on: December 08, 2012 10:12:56 AM »

I also use Varathane...i got a huge container for like 5 bucks. I've done quite a bit of stuff with it and it has never become tacky, unlike the first glaze I used. I learned that the sculpty glaze didn't work well for me before i did too much luckily. For some things I dont want a shiney finish on, I use a spray matte gloss i get from my art store.
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