A Crafts Community For Craft Ideas & DIY Projects - Craftster.org
Help | About | Contact | Press | Advertise | Cookie Policy | Terms | Site Map
Welcome, Guest.
Please login or register.
News: It's time to vote for your favorite swapped project! Smiley  Vote now through Sunday, August 30th!
Total Members: 311,381
Currently Running With Scissors:
556 Guests and 7 Users
Home Craftster Community Crafting Articles Craft Tutorials My Craftster Crafting Calendar City Guides Craft Shop


Pages: 1 2 3 [All]
Jump to page:
  Show Images Only     Send this topic  |  Print  |  Bookmark  
Topic: So is there a reason why my owl decided he wanted to look like a planet?  (Read 3863 times)
Tags for this thread:  Add new tag
Share the love... Pin it Submit to reddit add to Wists
1+
 
TAddictedAngelT
« on: July 12, 2006 08:24:36 PM »



It was good util I baked it and it got all bubbly. the process of it was gross. so is there a reason why? i used sculpey. maybe it was too hot? it said 250 degrees
« Last Edit: July 12, 2006 08:56:30 PM by TAddictedAngelT » THIS ROCKS   Logged

something_wierd
Friend of Craftster Friend of Craftster

Evil will always triumph because good is dumb.
Offline Offline

Posts: 1248
Joined: 15-Jun-2005

I like pointy things.


View Profile
« Reply #1 on: July 12, 2006 09:34:59 PM »

Were there bubbles in the clay to begin with?  Gases expand as they heat up, making the bubbles bigger.  Be sure to eliminate bubbles by cutting into the side of them and gently pressing the air out and then smoothing the clay. 

Also, you did do it at 250 degrees Farenheit, right?
THIS ROCKS   Logged

Polymer Clay Challenge #2 has a winner, RobbinZombie!  her entry was The Kraken  She will receive a prize from Persephone Rose!
RedCrayon
I"VE GOT SOMETHING TO SAAAAY!
Offline Offline

Posts: 22
Joined: 20-Dec-2005


View Profile WWW
« Reply #2 on: July 12, 2006 10:56:52 PM »

How thin was it and how long did you cook it for? I had Sculpy bubble up on me once because I left it in the oven for too long.
THIS ROCKS   Logged

http://www.redcrayon.etsy.com
http://www.myspace.com/msbettie

"You know, I cried when I had no shoes, until I met a man who had no feet. And then I laughed...really hard."
~Jerri Blank
craftyhev
Offline Offline

Posts: 265
Joined: 12-Feb-2006
Have a nice day :)


View Profile
« Reply #3 on: July 12, 2006 11:32:08 PM »

I love him regardless of the bubbles Cheesy
THIS ROCKS   Logged

Hugs, Heather

Be true to yourself Smiley Smiley Smiley

When you get to the end of your rope - tie a knot and hang on!!
(Franklin D. Roosevelt)
GingaNic
Offline Offline

Posts: 179
Joined: 06-Jan-2006

A poor MA student...


View Profile
« Reply #4 on: July 13, 2006 04:05:37 AM »

I quite like the effect actually... looks funky!
THIS ROCKS   Logged

kaleesi
Craftaholic
Offline Offline

Posts: 3614
Joined: 29-Jan-2005

Rae'Lynn Grace - 5 months old


View Profile
« Reply #5 on: July 13, 2006 04:34:36 AM »

That's the exact same thing I keep getting! And worse on the silver sculpty!
I have tried everything - I read all the things at Diane B's site http://www.glassattic.com/polymer/pastamachines.htm and tried not using the pasta machine or not working the clay so much but I but still kept getting them (maybe not as bad).
I'm thinking it's partly because the clay is so thin - I've been turning the oven down some thinking it is just too high for so thin and that has helped some.
If I find a total cure I'll let you know!
Good luck!
THIS ROCKS   Logged

I have a gorgeous granddaughter Smiley

Not allowed to craft without supervision Wink
God is big enough.....
something_wierd
Friend of Craftster Friend of Craftster

Evil will always triumph because good is dumb.
Offline Offline

Posts: 1248
Joined: 15-Jun-2005

I like pointy things.


View Profile
« Reply #6 on: July 13, 2006 10:58:10 AM »

That's weird, guys.  I have never had this problem.  With something that thin, I would not bake it for more than 10 minutes.  The general rule of thumb is 15 minutes per 1/4 inch.  I actually bake all my clays at 275 degrees regardless of brand.  I have never had a problem.

I do like that effect, though. 
THIS ROCKS   Logged

Polymer Clay Challenge #2 has a winner, RobbinZombie!  her entry was The Kraken  She will receive a prize from Persephone Rose!
antigone
« Reply #7 on: July 13, 2006 02:27:37 PM »

this is by far the strangest title I've seen in a long time Cheesy Thank you
THIS ROCKS   Logged

Diane B.
Offline Offline

Posts: 5074
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


View Profile WWW
« Reply #8 on: July 13, 2006 02:43:45 PM »

This is definitely not right, and I've baked many many thin things, even Sculpey.

Definitely check out this page at my site, under the subcategory Bubbles (which is under Problems):
http://www.glassattic.com/polymer/pastamachines.htm
because there are various things that can cause bubbling inside clay, and various ways to prevent or correct it.  Could be something you do every time, or could be something that won't happen as frequently later (or could be some really weird batch of clay, I suppose).
 
Did you use any colorant on top of the clay, btw?... looks kind of metallic.



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)
TAddictedAngelT
« Reply #9 on: July 13, 2006 09:59:30 PM »

Hey thanks for all the replies you guys!

Yeah I think it was too hot. It was set at 250 F. And there wasn't any bubbles to begin with. It started bubbling the first 5 minutes...

I sent the photo to a bunch of my friends and some loved the effect and others thought it was awful and they hated it. I acatually like it a big. Hmmmmm........ I'm not sure what to do with it now. Haha.

THIS ROCKS   Logged

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.
THIS ROCKS   Logged

Diane B.
Offline Offline

Posts: 5074
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


View Profile WWW
« 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
few of my photos
http://s96.photobucket.com/albums/l163/DianeBB
(had to move them from YahooPhotos, so many now without captions)
kaleesi
Craftaholic
Offline Offline

Posts: 3614
Joined: 29-Jan-2005

Rae'Lynn Grace - 5 months old


View Profile
« 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?
THIS ROCKS   Logged

I have a gorgeous granddaughter Smiley

Not allowed to craft without supervision Wink
God is big enough.....
Diane B.
Offline Offline

Posts: 5074
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


View Profile WWW
« 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

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)
teapotdnky
Tutorial Contributor

Friend of Craftster Friend of Craftster

Obomaboe?
Offline Offline

Posts: 6702
Joined: 30-Dec-2004

Craft or Die


View Profile available for personal swaps
« 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.
THIS ROCKS   Logged

Pinterest

Guess who's back?
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.



THIS ROCKS   Logged

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.
THIS ROCKS   Logged

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.
THIS ROCKS   Logged

kaleesi
Craftaholic
Offline Offline

Posts: 3614
Joined: 29-Jan-2005

Rae'Lynn Grace - 5 months old


View Profile
« 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!!!!!!!!!!!
THIS ROCKS   Logged

I have a gorgeous granddaughter Smiley

Not allowed to craft without supervision Wink
God is big enough.....
Diane B.
Offline Offline

Posts: 5074
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


View Profile WWW
« 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)
PuNkY*BrAtZtEr
professional shooter/natural born brat
Offline Offline

Posts: 450
Joined: 26-Apr-2006

who says wings aren't an accessory?


View Profile WWW available for personal swaps
« Reply #20 on: July 19, 2006 12:13:19 AM »

I might have missed it while I was reading the posts, but I was curious what you are baking your clay on? I used metal once and this happened, and since I've used glass pie plate I've never had ANY problem, and my sibilings and I make some pretty tiny and thin items and we always bake them at 275, but then again it varies with the ovens... Just thought I'd put my two cents in. Cheesy
THIS ROCKS   Logged
Diane B.
Offline Offline

Posts: 5074
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


View Profile WWW
« Reply #21 on: July 19, 2006 10:02:08 AM »

Quote
I used metal once and this happened, and since I've used glass pie plate I've never had ANY problem,

I don't understand the physics involved, but unfortunately both metal trays and ceramic tiles can heat up higher than the ambient temp of the air in an oven, so those can be more probelmatic for baking clay (especially when the items are thin or small). 

Just putting a piece or two of plain paper between the clay and those baking surfaces  is usually enough though to avoid that, or else the whole metal baking tray or ceramic tile can be elevated farther away from the bottom coils with a couple of alum. foil logs or wood strips.  Ah, minutiae  Roll Eyes... but good to know if it's messing you up.



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)
PuNkY*BrAtZtEr
professional shooter/natural born brat
Offline Offline

Posts: 450
Joined: 26-Apr-2006

who says wings aren't an accessory?


View Profile WWW available for personal swaps
« Reply #22 on: July 19, 2006 02:54:10 PM »

Quote
I used metal once and this happened, and since I've used glass pie plate I've never had ANY problem,

I don't understand the physics involved, but unfortunately both metal trays and ceramic tiles can heat up higher than the ambient temp of the air in an oven, so those can be more probelmatic for baking clay (especially when the items are thin or small). 
yea I know that's true about metal, but I've never used ceramic... never thought of that.
I just use plain old clear glass oven safe plate. Cheesy
THIS ROCKS   Logged
TAddictedAngelT
« Reply #23 on: July 19, 2006 04:51:02 PM »

I used the metal tray that comes with the oven with a piece of foil between it. i

i wasn't aware you could put paper in the oven. doens't it burn?
THIS ROCKS   Logged

teapotdnky
Tutorial Contributor

Friend of Craftster Friend of Craftster

Obomaboe?
Offline Offline

Posts: 6702
Joined: 30-Dec-2004

Craft or Die


View Profile available for personal swaps
« Reply #24 on: July 19, 2006 04:58:38 PM »

If your oven is set at the right temp for the paper it won't burn. Over time it will get brittle and brown and needs to be changed though.

EDIT: I wrote clay, I meant paper.
« Last Edit: July 19, 2006 05:54:35 PM by teapotdnky » THIS ROCKS   Logged

Pinterest

Guess who's back?
Diane B.
Offline Offline

Posts: 5074
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


View Profile WWW
« Reply #25 on: July 19, 2006 05:32:41 PM »

There's a famous Ray Bradbury book that makes it easy to remember the burning temperature of paper (in this case, re burning books)... it's called "Fahrenheit 451".  It seems strange that paper has such a high burning point, I know, but it's just wood after all and home ovens don't get nearly as hot as direct flames (and polymer is baked in a "low" oven anyway). 

I use a sheet of two paper all the time on my metal baking tray, and it lasts a long time (except that I'm often using the paper --often "patty paper"-- as something to make and  carry the clay on so I won't have to distub it on the way to and from the oven, so I guess it doesn't stay in there for a hugely long time anyway).  After awhile some of the plasticizer from the clay will get onto the paper, and I believe that's what can darken from long-term direct contact with metal, etc.... not sure though (plasticizer burns at over 385 degrees).

Quote
I used the metal tray that comes with the oven with a piece of foil between it.

Foil between the tray and the clay??   Aluminum foil is thinner than a metal baking tray so I assume it would dissipate some of the heat from the baking tray if over it, but you'll also get a shiny spot anywhere the clay touches any kind of metal (or glass, ceramic, etc.) while it's baking.  So you could always put a piece of paper over the foil if you wanted, or there are lots of other things that can insulate the clay from the metal or ceramic too and not leave a shiny spot, like a bit of polyester fiberfill (don't worry, it doesn't burn/melt either unless it's almost touching the heating coils), or a wad of tissues (more "wood"), or a wad of cotton fabric, or a even pile of baking soda, etc.


(check out this page for lots of baking info:
http://www.glassattic.com/polymer/baking.htm )




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)
wanching
« Reply #26 on: July 19, 2006 11:12:04 PM »

cute!
THIS ROCKS   Logged
Threads you might like:
Pages: 1 2 3 [All] Jump to page:
  Send this topic  |  Print  |  Bookmark  
 
Jump to:  



FacebookTwitterPinterest
only results with images
include swap threads
advanced search



your ad could be here!

How-To Videos
Beauty Quickie: The Quickest, Easiest Reverse French Manicure
Learn How Get a Denim Look on Your Nails
Get The Most Out Of Your Skin Care Routine
How to Wear Grown-Up Glitter Eye Makeup
Beauty Test Lab: Brush-On Mascara
Latest Blog Articles
@Home This Weekend: Upcycled Paint Cans
August 26, 2015 Featured Projects
Tute Tuesday: Flannel Hoodie

Comparison Shopping




Support Craftster
Become a
Friend of Craftster

Buy Craftster Swag
Buy Craft Supplies
Comparison Shopping

Craftster heartily thanks the following peeps...
Moderators

Follow Craftster...






Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC
SimplePortal 2.3.5 © 2008-2012, SimplePortal
Valid XHTML 1.0! Valid CSS!

Copyright ©2003-2015, Craftster.org an Internet Brands company.