Questions about rock inclusions

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Suzanne Taggart
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Joined: Mon Mar 17, 2003 9:47 pm

Questions about rock inclusions

Post by Suzanne Taggart »

My daughter collected tiny pieces of iron ore that wash out of our hill for inclusions in some glass tests I wanted to do. My husband became alarmed and suggested I post to the board.

I saw a wonderful bowl where the bottom was slumped over a mound of rocks - very cool which provided the inspiration....

Has anyone tried this? With what results....
Suzanne Taggart
Mantiou Gallery & Studio
California, MO
Brad Walker
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Post by Brad Walker »

Some rocks have moisture in them and will explode or crack when heated in a kiln. If you're going to try this, first prefire the rocks to see how they react to the heat.
Suzanne Taggart
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Joined: Mon Mar 17, 2003 9:47 pm

Post by Suzanne Taggart »

Thanks for the warning. I suppose knowing something about geology would help here.....

By the way, I love the new format and find it so easy to use now....
Suzanne Taggart
Mantiou Gallery & Studio
California, MO
Lynn Bishop
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Location: Newport, Oregon

Post by Lynn Bishop »

Don't forget to kilnwash the rocks first. Then remove after firing, wash, and glue on. Lynn Bishop
Kelly Burke Makuch
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Location: Connecticut

Post by Kelly Burke Makuch »

Has anyone tried encasing seashells? How did it work?
charlie
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Post by charlie »

Kelly Burke Makuch wrote:Has anyone tried encasing seashells? How did it work?
they'll probably turn to powder at fusing temps. they're only calcium loosely held together.
Dick Ditore
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shells

Post by Dick Ditore »

Some shells turn to powder, and some remain. Some just a ghost. You can slump, fuse over them on a bed of sand and get some shell design.


Dick
Jerry

Post by Jerry »

About these rocks. Are they being encased? Is COE an issue? Does Quartz expand more than Granite? Are they just being used as a form to create a pedestal? Seems like I've seen something like this as well and had no idea how it was accomplished.

Appreciate the help,
Jerry
charlie
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Joined: Mon Mar 10, 2003 3:08 pm

Post by charlie »

Jerry wrote:About these rocks. Are they being encased? Is COE an issue? Does Quartz expand more than Granite? Are they just being used as a form to create a pedestal? Seems like I've seen something like this as well and had no idea how it was accomplished.

Appreciate the help,
Jerry
granite is mostly quartz. http://www.britannica.com/eb/article?eu ... ranite&ct=

there was something about an artist in (new mexico?) who does this. look in the old archives for references.
Bonita (Nita) Crawford
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Location: Montgomery, AL

Encasing seashells

Post by Bonita (Nita) Crawford »

I have tried two or three times to encase seashells in glass, both
float and BE but they crumbled and turned an ugly grayish color.

Warmly,
Nita
Reba
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Location: Montreal, Canada

Re: Questions about rock inclusions

Post by Reba »

Suzanne Taggart wrote:My daughter collected tiny pieces of iron ore that wash out of our hill for inclusions in some glass tests I wanted to do. My husband became alarmed and suggested I post to the board.

I saw a wonderful bowl where the bottom was slumped over a mound of rocks - very cool which provided the inspiration....

Has anyone tried this? With what results....
hi, i was just thinking about how to get sand and rock in/on/under fused glass and came across this older post.

did anyone ever try slumping over rock? rock on sand?

thanks,

reba

ps i read that you can slump over shells on a sand bed with some results too.)
Lynn g
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Location: Clovis, CA

Re: Questions about rock inclusions

Post by Lynn g »

When you pre-fire the rocks, it's a good idea to put them under a stainless steel bowl...just in case they do explode, it will be contained.
Lynn g
"Patriotism is not enough, I must have no hatred or bitterness towards anyone." - Dame Edith Cavell
JestersBaubles
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Re: Questions about rock inclusions

Post by JestersBaubles »

Reba wrote:
did anyone ever try slumping over rock? rock on sand?
At a class I took this year at the expo, one of the instructors had a piece where the bottom of a bowl was slumped over rocks. It was very interesting.

Dana W.
Mark Hall
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Re: Questions about rock inclusions

Post by Mark Hall »

I've seen hot glass pick up rocks onto a gather, and casters pour including them in their molds - both with favorable results. However it's a crap shoot, with every rock different components. The ones I saw used were small and well-rounded.
Reba
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Location: Montreal, Canada

Re: Questions about rock inclusions

Post by Reba »

hi dana,

thanks for your feedback. i haven't seen it, but when someone on the board described "slumping glass over rocks on a bed of sand" it sounded lovely. also, i live on an island so i have lots of rocks and sand.

when you say the bowl was slumped over rocks, do you mean the bowl achieved its slumped shape from the rocks, or did the glass slump and contain the rocks?

thanks,

reba
JestersBaubles wrote:
Reba wrote:
did anyone ever try slumping over rock? rock on sand?
At a class I took this year at the expo, one of the instructors had a piece where the bottom of a bowl was slumped over rocks. It was very interesting.

Dana W.
Barb R
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Re: Questions about rock inclusions

Post by Barb R »

JestersBaubles
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Re: Questions about rock inclusions

Post by JestersBaubles »

[quote="Reba"]hi dana,

when you say the bowl was slumped over rocks, do you mean the bowl achieved its slumped shape from the rocks, or did the glass slump and contain the rocks?

thanks,

reba

[quote="Reba"]

The rocks were not included in the bowl -- they were kiln-washed and the glass slumped over them.

Dana
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