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.
Monday, May 23 News:  It's time to vote!  Which Craftster member rocked dollar store crafting?  Cast your vote here!
Total Members: 305,672
Currently Running With Scissors:
445 Guests and 11 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: Bubbles  (Read 619 times)
Tags for this thread:  Add new tag
Share the love... Pin it Submit to reddit add to Wists
1+
 
heil_kitler
« on: April 20, 2008 04:32:57 PM »

My clay always gets bubbles at the top when I bake it! How do I prevent this from happening?
THIS ROCKS   Logged
HippieKender
The most precious thing one can make is a friend.
Offline Offline

Posts: 1903
Joined: 21-Oct-2007

I tend to lick circular things.


View Profile WWW
« Reply #1 on: April 21, 2008 08:42:53 AM »

If you have small air bubbles in your clay (that you may not be able to see) they will expand and grow with the heat of curing the clay (to the point that you can see them now). 

Quote from: GlassAttic.com
There are various ways that air or moisture can get into or under clay (especially into sheets) which may show up as bubbles or lumps during pasta machining, or baking
.... air bubbles can show up immediately or not until the clay is heated

Some of the causes have to do with:
the way the clay is conditioned or trapped clay under pasta machine scrapers pulling on sheets, particular type of clay or soft stretchy clay, particular type of box or bar of clay you happen to get, covering or layering clay sheets trapping air, not letting clay rest before baking, moisture from hands or white glues creating steam bubbles, etc.... here are just a couple of suggestions:
...running your clay through the pasta machine at progressively thinner settings (without folding) can help avoid, or get rid of, bubbles. LynnDel
...letting clay rest before baking can help make internal bubbles go away for some reason
...leaching the clay may help
THIS ROCKS   Logged

Diane B.
Offline Offline

Posts: 5074
Joined: 01-May-2004

GlassAttic --polymer clay "encyclopedia"


View Profile WWW
« Reply #2 on: April 21, 2008 08:59:36 AM »

The quote below has a summary of the main reasons that bubbles may happen in polymer clay, but here's the page at my site that gives loads more details on each of the reasons plus even more ways to avoid them, if you want to check it out:
http://www.glassattic.com/polymer/pastamachines.htm
(...click on Bubbles...)


HTH!

Diane B.
« Last Edit: April 21, 2008 09:03:06 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)
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



How-To Videos
How to Make Pork Kakuni
How To Roll Your Own Sushi At Home
How to Make Tofu Salad
How to Make Low Calorie Hiyashi Chūka with Shirataki Noodles
How to Make Beefless Southeast-Asian Satays I Plant-Based
Latest Blog Articles
@Home This Weekend: Reusable Dryer Sheets
Tute Tuesday: Painted Background
Easy Summer Salads

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 ©2003-2016, Craftster.org an Internet Brands company.