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Question Posted By: Janice Carlin Monday, January 1 2007 09:53:06 Suggest Answer

I'm having a problem with some of the Velvet colors bubbling and blistering when firing tiles. I use an Airpen to apply three even coats (various colors on each tile), allowing each coat to dry ove
ight. Dip each tile in Amaco LG10 - 2 coats, allowing the first to dry at least 6 hours, the second ove
ight. Fire to witness 05. Some colors come out beautifully, others bubble and blister or crack and peel. One tile may have three colors that come out fine, two that don't. I'm seeing more problems with browns and greens than other colors. Thoughts?

  +  Reply Posted By: amy Wednesday, January 3 2007 08:36:46

    you may want to try firing the underglaze onto the tile before glaze firing it. i've had similar problems with underglazes not working out correctly, this typically fixes it. also, i fire to 04 (but thats not really a big difference)

  +  Reply Posted By: Lori Jenkins Thursday, January 4 2007 09:44:05

    Janice,

    I would suggest that you apply the underglazes and fire them to Cone 04 (1975ºF) at a medium speed to set the underglazes. Also dip the tile once not twice as this may be two much glaze for what your doing. Fire to a good solid cone 05 (1915-1925ºF.) Feel free to contact me if you have further questions. My email address is ljenkins@amaco.com.