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Issue #018 - Bubbles In Glass
February 28, 2010

Hot Out of the Kiln

February 28, 2010


Hot Out of the Kiln brings you the latest information, ideas, and resources for your glass fusing experience. If you like this newsletter, please forward it to share it with your friends.

In this Issue of Hot Out of the Kiln:

1. Feature Article
2. Quote of the Month
3. Since Last E-zine
4. Reader Comments
5. Tips and Tricks
6. Additions to Site
7. What's New

Feature Article - Bubbles in Glass

Bubbles in glass can be very frustrating, especially when you have taken lots of time on designing and preparing that perfect fused artwork. Although there are times when you want bubbles, most of the time they are deemed defects and flaws in the glass.

Larger bubbles are known as blisters, smaller ones as are referred to as seeds and the long stretched bubbles are called air-lines. Whatever you call them they can be quite a dilemma when they seem to just appear after firing.

Sometimes you go along doing the same procedures and all of a sudden glass bubbles appear for no apparent reason. Some of the items you might check if this should happen would be:

  • Are the kiln and/or shelf level?
  • Are you laying the glass differently?
  • Are there chips, cracks or gouges in the kiln wash on the shelf?
  • If you do acquire a large bubble in your finished product is there some way of removing this defect? There are a couple of things you could try to salvage the piece.

  • Break out the bubble, cut a circle just slightly larger than the open area, lay that on top of the opening and then full fuse the piece.
  • Try slumping the piece into a deep dish and fuse the piece higher and longer so that the glass flows into the area. This works best if the bubble is in the center of the design.
  • To remove tiny bubbles in a fused piece, try drilling through the bubble with a diamond bit drill. Be sure to keep the glass and bit wet. Once finished drilling the hole, use a small syringe to clean out the hole with water. Use the syringe again to force air into the hole to remove moisture.
  • If all else fails, break up the glass and reuse the scraps in other pieces.

  • Quote of the Month

    “The world's a bubble; and the life of man Less than a span.” - Bacon, Francis,Viscount St Albans

    Since Last E-Zine

    This month I have been designing and writing about Valentine’s Day. Next month will be St. Patrick’s Day patterns, of course. Be sure to check out the Valentine patterns…they can be used all year long.

    Next month is my youngest daughter’s birthday. Wanting to make something special for her, I have been on the hunt for something new and fun. December's Fired Arts and Crafts magazine had an adorable pizza plate that I though would be interesting. The particular design is a ceramic piece, but I wanted to do it in glass.

    First I had to find someone who sold the ceramic form in my area. Once I purchased the item, I set about determining what I wanted on this pizza. I finally decided on a pepperoni and cheese pizza. I used a mixture of Glassline paints and frit as embellishments.

    It is finished and is absolutely adorable. I am going to give her this piece and include a certificate for a local pizza parlor. She is going to just love the piece. I am thinking about putting up a page on the site with directions on making this piece.

    Reader Comments

    Sam writes:

    Hello Connie, as always I enjoy your newsletters. I thought you might want to let them know should they decide to sell a piece with a rubber stamp image to make sure that it is an "angle stamp" otherwise it has possibly been copyrighted. A list of angel stamp companies can be found at this and other sites: Angel List Complete


    Marge writes:

    I look forward to your newsletter. It always has so many interesting and helpful ideas. Thanks for the coral bowl instructions. I can hardly wait to give it a try.

    I have a suggestion to pass along. My husband came up with this idea after I complained that I was ruining my fingernails when grinding small pieces of glass for fusing. I purchased two different sizes of rubber finger tips from an office supply store. I cover my thumbs with the larger ones and several other fingers with the smaller size. They really protect your fingernails and also help to avoid some of those small cuts that you can get when pushing glass pieces into the grinding wheel. I hope your readers find this “tip” useful.

    Tips and Tricks

    When stacking glass, add a bubble squeeze. Soak for about 30 minutes at 1050-1100 degrees. Fine tune this to find out what works in your individual kiln and with different types of glass.

    Additions to the Site

    02/01/10 – Angel Heart

    02/02/10 – Butterfly Heart

    02/03/10 – Two Hearts

    02/04/10 – Frit of Love

    02/05/10 – Laced Heart

    02/07/10 – Kissing Lips

    02/08/10 – Romantic Love

    02/09/10 – Linked Hearts

    02/11/10 – Cupid

    02/12/10 – Winged Heart

    What's New - Kiln Formed Glass Book

    Delphi is currently offering this Kiln Formed Glass book by Gillian Hulse for $24.95. It contains over 25 projects slumped and fused designs. Want more information on layering and combining clear, dichroic and textured glass with inclusions? This book will assist you in these areas as well as including detailed photographs and templates.

    To purchase just go to Kiln Formed Glass located on the Delphi Glass site.

    Thank you for subscribing

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    Finally, thank you for signing up for the newsletter. If you know anyone else that might like to receive it please let them know. They can either visit the site and sign up, or send me an email at

    Comments? Ideas? Feedback? I would love to hear from you. Just reply to this e-zine and tell me what you think!

    See you next month…

    Glass Fusing Made Easy

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