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#1
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Jerry-talc question
Hi Jerry. I tried your talc trick to try and replicate a glass texture.
First firing got a huge bubble. Slowed down the schedule to 200 deg/hr and the glass mashed down the texture in the talc about 50% after firing to 1400, and still had a bubble although much smaller. Do you have any tips here? Thanks Liam |
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#2
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Well, bubbles are the result of something between the bottom of your
glass and the shelf/talc/mold. Talc doesn't cause bubbles. In fact, glass painters use talc on their kiln shelves so the back of their glass doesn't have any texture on it. So I'm not sure what caused your problem. Bubbles that come up from the bottom of the piece are, in my opinion, the hardest problems to solve. Now, about the change in the shape; can you say a bit more about what you were actually doing? My memory isn't as good as it used to be and I can't remember what you wanted to do. I'll do my best to help you through all this. Jerry Liam Striker wrote: Hi Jerry. I tried your talc trick to try and replicate a glass texture. First firing got a huge bubble. Slowed down the schedule to 200 deg/hr and the glass mashed down the texture in the talc about 50% after firing to 1400, and still had a bubble although much smaller. Do you have any tips here? Thanks Liam -- ? Angel Antics Glass Crafters ? Fine Art Glass, Kaleidoscopes and Tiffany Lamp Reproductions Jerry & Ann Maske 3 Garden Way Sullivan, ME 04664 Phone (207) 422-2250 Web site http://www.angelantics.net/ |
#3
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I was trying to duplicate a pattern of texture from one glass to another.
An impression was made in a bed of talc from one glass, and another was slumped over the talk to try and achieve the same pattern. placing cold glass over the talk somewhat mashed the pattern in the talc. I then stilted the glass on the ends by 1/4" and slumped down into the pattern. Better results but still some flat spots. And of course I had bubbles. As far as the bubbles go, It was trapped air. I assumed that it would be able to disperse thought the talc, but I guess it couldn't Liam "Jerry Maske" wrote in message ... Well, bubbles are the result of something between the bottom of your glass and the shelf/talc/mold. Talc doesn't cause bubbles. In fact, glass painters use talc on their kiln shelves so the back of their glass doesn't have any texture on it. So I'm not sure what caused your problem. Bubbles that come up from the bottom of the piece are, in my opinion, the hardest problems to solve. Now, about the change in the shape; can you say a bit more about what you were actually doing? My memory isn't as good as it used to be and I can't remember what you wanted to do. I'll do my best to help you through all this. Jerry Liam Striker wrote: Hi Jerry. I tried your talc trick to try and replicate a glass texture. First firing got a huge bubble. Slowed down the schedule to 200 deg/hr and the glass mashed down the texture in the talc about 50% after firing to 1400, and still had a bubble although much smaller. Do you have any tips here? Thanks Liam -- ? Angel Antics Glass Crafters ? Fine Art Glass, Kaleidoscopes and Tiffany Lamp Reproductions Jerry & Ann Maske 3 Garden Way Sullivan, ME 04664 Phone (207) 422-2250 Web site http://www.angelantics.net/ |
#4
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LIam, I just had a thought about this particular bubble situation,
Are you using a shelf primer of some type on the shelf under the talc? Are you putting a shelf primer on your Hydroperm molds? Some shelf primers will "gas off" at particular temperatures or at particularly rapid ramp cycles. Something to think about. With Hydroperm you do NOT use shelf primer, the glass will not stick to the plaster, leaves a very smooth surface in the glass, very nice. If you are using Talc to pick up a pattern, you don't need shelf primer because the glass is setting on the talc, not the shelf. Just a thought. "Liam Striker" wrote in message . .. I was trying to duplicate a pattern of texture from one glass to another. An impression was made in a bed of talc from one glass, and another was slumped over the talk to try and achieve the same pattern. placing cold glass over the talk somewhat mashed the pattern in the talc. I then stilted the glass on the ends by 1/4" and slumped down into the pattern. Better results but still some flat spots. And of course I had bubbles. As far as the bubbles go, It was trapped air. I assumed that it would be able to disperse thought the talc, but I guess it couldn't Liam "Jerry Maske" wrote in message ... Well, bubbles are the result of something between the bottom of your glass and the shelf/talc/mold. Talc doesn't cause bubbles. In fact, glass painters use talc on their kiln shelves so the back of their glass doesn't have any texture on it. So I'm not sure what caused your problem. Bubbles that come up from the bottom of the piece are, in my opinion, the hardest problems to solve. Now, about the change in the shape; can you say a bit more about what you were actually doing? My memory isn't as good as it used to be and I can't remember what you wanted to do. I'll do my best to help you through all this. Jerry Liam Striker wrote: Hi Jerry. I tried your talc trick to try and replicate a glass texture. First firing got a huge bubble. Slowed down the schedule to 200 deg/hr and the glass mashed down the texture in the talc about 50% after firing to 1400, and still had a bubble although much smaller. Do you have any tips here? Thanks Liam -- ? Angel Antics Glass Crafters ? Fine Art Glass, Kaleidoscopes and Tiffany Lamp Reproductions Jerry & Ann Maske 3 Garden Way Sullivan, ME 04664 Phone (207) 422-2250 Web site http://www.angelantics.net/ |
#5
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i remember seeing a fellow's work that incorporated a paste of kiln wash as
opposed to a liquid that was applied with a cake decorating kit and used to create some really cool textured pieces. Perhaps mixing the kiln wash thick, applying the pattern piece, then letting dry before firing your new piece??? m "Javahut" wrote in message ... LIam, I just had a thought about this particular bubble situation, Are you using a shelf primer of some type on the shelf under the talc? Are you putting a shelf primer on your Hydroperm molds? Some shelf primers will "gas off" at particular temperatures or at particularly rapid ramp cycles. Something to think about. With Hydroperm you do NOT use shelf primer, the glass will not stick to the plaster, leaves a very smooth surface in the glass, very nice. If you are using Talc to pick up a pattern, you don't need shelf primer because the glass is setting on the talc, not the shelf. Just a thought. "Liam Striker" wrote in message . .. I was trying to duplicate a pattern of texture from one glass to another. An impression was made in a bed of talc from one glass, and another was slumped over the talk to try and achieve the same pattern. placing cold glass over the talk somewhat mashed the pattern in the talc. I then stilted the glass on the ends by 1/4" and slumped down into the pattern. Better results but still some flat spots. And of course I had bubbles. As far as the bubbles go, It was trapped air. I assumed that it would be able to disperse thought the talc, but I guess it couldn't Liam "Jerry Maske" wrote in message ... Well, bubbles are the result of something between the bottom of your glass and the shelf/talc/mold. Talc doesn't cause bubbles. In fact, glass painters use talc on their kiln shelves so the back of their glass doesn't have any texture on it. So I'm not sure what caused your problem. Bubbles that come up from the bottom of the piece are, in my opinion, the hardest problems to solve. Now, about the change in the shape; can you say a bit more about what you were actually doing? My memory isn't as good as it used to be and I can't remember what you wanted to do. I'll do my best to help you through all this. Jerry Liam Striker wrote: Hi Jerry. I tried your talc trick to try and replicate a glass texture. First firing got a huge bubble. Slowed down the schedule to 200 deg/hr and the glass mashed down the texture in the talc about 50% after firing to 1400, and still had a bubble although much smaller. Do you have any tips here? Thanks Liam -- ? Angel Antics Glass Crafters ? Fine Art Glass, Kaleidoscopes and Tiffany Lamp Reproductions Jerry & Ann Maske 3 Garden Way Sullivan, ME 04664 Phone (207) 422-2250 Web site http://www.angelantics.net/ |
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