A Crafts Community For Craft Ideas & DIY Projects - Craftster.org
Help | About | Contact | Press | Advertise | Terms | Site Map
Welcome, Guest.
Please login or register.
News: Craftster Best of 2014 have been announced!  Check out the winning projects here!
Total Members: 301,074
Currently Running With Scissors:
642 Guests and 17 Users
Home Craftster Community Crafting Articles Craft Tutorials My Craftster Crafting Calendar City Guides Craft Shop


Pages: [1]
Jump to page:
  Show Images Only     Send this topic  |  Print  |  Bookmark  
Topic: I burnt my clay-and I like it. Anyone else do that?  (Read 1111 times)
Tags for this thread:  Add new tag
Share the love... Pin it Submit to reddit add to Wists
1+
 
bookstorebabe
Offline Offline

Posts: 3081
Joined: 11-Oct-2006

Girl Genius! Kaja&Phil Foglio


View Profile WWW available for personal swaps
« on: July 30, 2010 08:40:05 PM »

I have a small package of brown scuply someone gave me-no idea how old it is! It was still pnice and soft, though.
 Well, I got it out and made random pieces. I put it on a disposable pie tin, at 275-and still soft. Hmm, those are pretty thick pieces, I says-so 15 minutes more. Then 30, then an hour, then move it to the  lowest rack and turn the oven to 300 and stalk off for a while.
Sure enough, it turned black! I didn't intend that. But with the rusty metal and watch bits I pressed in, it looks cool! I did a tiny snake, and pressed in a couple of gears for eyes, did a pendant, did a few odd shapes...all came out pretty nifty.
I'm doing that on purpose next time. Has anyone here ever done that? The pieces aren't brittle at all, just black. 
THIS ROCKS   Logged

"If you're going to go for tech that doesn't exist,think Willy Wonka,not Hoover!" Firefairy@craftster
<a href="http://StudioLTD@etsy.com.>StudioLTD"</a>| Couponcode CRAFTSTER 10%
<a href=https://www.etsy.com/shop/HipsterHive?ref=shop_sugg>HipsterHive</a>|
http://www.pinterest.com/studioltd6
nougatgee
« Reply #1 on: July 30, 2010 09:06:52 PM »

hi!  could you post pix???  i have burnt clay and managed to disguise it and like the results Smiley

however you must remember that burnt clay gives out toxic fumes....  i think it would be best to stick to the manufacturers instructions and try and achieve the same results with paint etc.
THIS ROCKS   Logged
nougatgee
« Reply #2 on: July 30, 2010 09:08:07 PM »

oh - and baked polyclay is soft when it is still hot from the oven - it hardens as it cools!
THIS ROCKS   Logged
bookstorebabe
Offline Offline

Posts: 3081
Joined: 11-Oct-2006

Girl Genius! Kaja&Phil Foglio


View Profile WWW available for personal swaps
« Reply #3 on: July 30, 2010 10:33:05 PM »

Oh, thank you! That makes sense about the fumes. And I didn't know it would harden up after baking, I just thought it wasn't done. That helps!
I can't post pics right now, sorry. Would if I could.I need a new camera.. I had to give the tiny snake to my daughter already. Smiley
Painting clay-can you paint it before you bake? See, I like having the black clay base to add stuff to, and painting it black afterwards around tiny things would be hard. I suppose I could buy black clay...but surely there's a way to color it first.
Maybe I'll burn it outside, I have a teeny craft oven I bought during a going out of business sale that  I've never used. Supposed to be good for shrinky dinks and clay.
THIS ROCKS   Logged

"If you're going to go for tech that doesn't exist,think Willy Wonka,not Hoover!" Firefairy@craftster
<a href="http://StudioLTD@etsy.com.>StudioLTD"</a>| Couponcode CRAFTSTER 10%
<a href=https://www.etsy.com/shop/HipsterHive?ref=shop_sugg>HipsterHive</a>|
http://www.pinterest.com/studioltd6
Blitherypoop
« Reply #4 on: July 31, 2010 12:40:05 AM »

You could rub or brush a powdered pigment or ground chalk onto the surface before baking.  It gives a better finish than painting, especially if you leave it unbaked for a day or so.  The chalk "sinks in" a little.
THIS ROCKS   Logged
Diane B.
Offline Offline

Posts: 5062
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


View Profile WWW
« Reply #5 on: July 31, 2010 03:34:41 PM »

Quote
Has anyone here ever done that?

Oh definitely!  In fact, there's a whole sub-category at my site that has suggestions for dealing with 'burnt" clay on the Baking page  Grin:
http://glassattic.com/polymer/baking.htm > Remedies for Burned Items

You do want to be careful about the unhealthful smoke and fumes that happen when plastic burns though (for polymer clay in general, that happens at about 385 F and eventually the clay will get bubbly too).

Quote
I have a small package of brown scuply . . .those are pretty thick pieces, I says-so...then move it to the  lowest rack and turn the oven to 300 and stalk off for a while. . . The pieces aren't brittle at all, just black.

Even if your oven was at the temp you thought it was (often not the case), and the clay was not placed in a hot spot or too close to walls or coils or on certain types of baking surfaces, the 3 main "Sculpey" clays** are worse for darkening problems than all the others--and they do it even at lower temps than recommended by the manufacturers.  So 300 is way too hot for any brand or line of polymer clay except Kato Polyclay (though the temp can be upped briefly do clear up liquid clay and do a few other things--but still not on those Sculpeys).

As for the brittleness, the more any polymer clay polymerizes as it cures (which is what makes it harden), the stronger it will be.  
So going all the way to burned will have polymerized it a lot presumably, and even the "weaker" lines of polymer clay like those Sculpeys will be stronger if they're baked longer; in fact, those sculptors who just like to completely paint over polymer clay will often bake SuperSculpey for a few hrs just to make it stronger, and the color won't matter in that case since they'll be painting over it.
Those Sculpeys are also more brittle in any thin or projecting areas than the other brands/lines of polymer clay, though their surface will "feel" a little harder.  Thick and rounded shapes though are naturally strong.

**Sculpey III, SuperSculpey, and even worse original (white or terracotta, boxed) Sculpey

Quote
Painting clay-can you paint it before you bake? See, I like having the black clay base to add stuff to, and painting it black afterwards around tiny things would be hard. I suppose I could buy black clay...but surely there's a way to color it first.. . .Maybe I'll burn it outside

You can color polymer clay in various ways.  
Generally, "painting" is done after baking but in some cases can be done before when using various colorants (not usually the regular paint for clay which is acrylic paint).
Instead of burning the clay intentionally though to get the black color, you'd be better off to just start with purchased black clay which comes in any of the brands/lines of polymer clay.  
There are also some "black" powdered pigments that you could use on or in the other colors of polymer clay but starting with black clay would be much easier.
You could also add another colorant like artists' oil paint but you'd need too much acrylic paint to make a nice black and too much of anything that contains water isn't good to mix into raw polymer clay.

If you'd like to use a lot of black clay, you might want to just order larger "bricks" of it, which will often be cheaper and/or buy it online.
If you want to check out some of the online suppliers to see what their prices are, check out this page of my site under Mail Order:
http://glassattic.com/polymer/supplysources.htm

Diane B.
« Last Edit: July 31, 2010 04:00:48 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)
bookstorebabe
Offline Offline

Posts: 3081
Joined: 11-Oct-2006

Girl Genius! Kaja&Phil Foglio


View Profile WWW available for personal swaps
« Reply #6 on: July 31, 2010 03:59:09 PM »

Thank you! That's very helpful.
THIS ROCKS   Logged

"If you're going to go for tech that doesn't exist,think Willy Wonka,not Hoover!" Firefairy@craftster
<a href="http://StudioLTD@etsy.com.>StudioLTD"</a>| Couponcode CRAFTSTER 10%
<a href=https://www.etsy.com/shop/HipsterHive?ref=shop_sugg>HipsterHive</a>|
http://www.pinterest.com/studioltd6
Threads you might like:
Pages: [1] 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
How to Curl Clip In Hair Extensions Separately
How to Put Your Hair Up Using Clip in Hair Extensions
Quick and Pretty Half Up Hairstyle Tutorial
Cute Messy Side Bun Hair Do Inspired by Paris Hilton
How to Straighten Your Hair With Extensions
Latest Blog Articles
April 17, 2015 Featured Projects
@Home This Weekend: Upcycled Mini-Cabinet
Laundry Day!

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.