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

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
Email
Web site http://www.angelantics.net/

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
Email
Web site http://www.angelantics.net/

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
Email
Web site http://www.angelantics.net/

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
Email
Web site http://www.angelantics.net/