{"id":1550,"date":"2017-06-21T13:34:45","date_gmt":"2017-06-21T18:34:45","guid":{"rendered":"http:\/\/kaiserlee.com\/?p=1550"},"modified":"2017-06-21T13:34:45","modified_gmt":"2017-06-21T18:34:45","slug":"bubbles-never-again","status":"publish","type":"post","link":"https:\/\/kaiserlee.com\/wordpress\/bubbles-never-again\/","title":{"rendered":"Bubbles – never again!"},"content":{"rendered":"

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Yesterday, one of our new customers sent me this picture. Have you experienced this bubble problem? I did! Nearly 20 years ago, before I started using Kaiser Lee Board<\/em> as a kiln shelf.<\/p>\n

Here is my reasoning behind the bubble issue. Glass is a very slow heat conductor, while clay is a very good heat conductor. For example, you can hold a 3″ long glass stringer into a candle flame and it won’t get hot at the end of the stringer, even after softening in the front. With a clay piece, you would burn your fingers in no time. (If you want to try the clay part of this experiment, please have some Pepto Bismol next to you, to treat your burn marks).<\/p>\n

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When you place your glass on a clay shelf, there is always some air between the glass and the shelf and while the kiln heats up, the air gets hot and since it can’t escape will blow a bubble into the soft glass. Kaiser Lee Board,<\/em> on the other hand, does not conduct heat any faster than your glass. In addition, it is also porous and any trapped air can escape easily. Another advantage of fusing with Kaiser Lee Board is that you can fire a lot faster than with clay type kiln furniture.  Oh yes, I have read about all the tricks and hoops you have to go through to avoid those bubbles and Kaiser Lee Board.<\/em><\/p>\n

\"Image<\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=”1″ admin_label=”section”][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>Yesterday, one of our new customers sent me this picture. Have you experienced this bubble problem? I did! Nearly 20 years ago, before I started using Kaiser Lee Board as a kiln shelf. Here is my reasoning behind the bubble issue. Glass is a very slow heat conductor, while clay is a very good heat […]<\/p>\n","protected":false},"author":1,"featured_media":1551,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"

Yesterday one of our new customers sent me this picture. Have you ever experienced this bubble issues? I did! Nearly 20 years ago, before I started using Kaiser Lee Board as a kiln shelf.<\/p>

Here is my reasoning behind the bubble issue. Glass is a very slow heat conductor, while clay is a very good heat conductor. For example, you could hold a stick of glass, about 3\" long into the candle flame and it won't get hot in the back, even after softening in the front. You could not do this with a clay piece, without burning your fingers fairly fast. (If you want to try the clay part of this experiment have some Pepto Bismol next to you to treat your burn marks).\u00a0<\/p>

When you place your glass on a clay shelf, there is always a little bit of air between the glass and the shelf and when you heat up your kiln, the air gets hot and since it can not escape, it will blow up the soft glass. Kaiser Lee Board on the other hand does not absorb heat any faster than the glass and in addition to being porous any trapped air can escape. An additional advantage of fusing with Kaiser Lee Board is that you can fire a lot faster than with clay type kiln furniture. \u00a0Oh yes, I have read\u00a0about all the tricks and hoops you have to go through to avoid those bubbles and Kaiser Lee Board.<\/p>

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0\"Image<\/p>

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