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Pâte de Verre Bowl

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Pâte de Verre Bowl

Postby Chris_Petrauskas » Wed Oct 26, 2016 12:56 pm

Watch the Lesson at:
https://videos.bullseyeglass.com/videos/pate-de-verre-bowl/

Please discuss and comment in this thread.

Thanks!
Chris Petrauskas
Bullseye Glass Co.
Portland, Oregon, USA
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Re: Pâte de Verre Bowl

Postby jestersbaubles » Thu Oct 27, 2016 7:04 pm

After drying the mold and adding talc, are you venting the kiln during this firing because of organic burn-off from from the mold material?

Just curious...

Also, I am trying to get my head around the point in doing the wax positive and then doing another mold over that, other than you are trying to achieve the size of the original mold. Why not just pack the frit into the first mold? Maybe I should think about it for a while :mrgreen: .

Thank you for the video.

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Re: Pâte de Verre Bowl

Postby ejgiebel » Sun Oct 30, 2016 10:26 am

In the video you used a glazed bowl for the model. I assume if you use some kind of porous object (unglazed pottery, unfinished wood) you need to apply something to the surface to allow the model to slip out as easily as it did in the video. If so, is there something you recommend?

Ed
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Re: Pâte de Verre Bowl

Postby marykaynitchie » Thu Nov 03, 2016 8:52 am

Hi Dana,

We make plaster molds for waxes so that we can make multiple matching molds. It's a production technique. The first mold is plaster, not plaster-silica investment, so it won't withstand firing. However, a person could probably make the first mold out of investment.

I think that venting the kiln is actually letting "chemical water" escape from the plaster, and possibly any traces of wax that remain.

Hi Ed,

I have a haze recollection from the past that a teacher recommended covering an object with green soap, or cooking oil spray to keep plaster or plaster-silica from sticking. Others may have done something like this more recently than I have, and I would love to have this confirmed or refuted by an experienced kilncaster.

Thanks,

Mary Kay
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Re: Pâte de Verre Bowl

Postby mjmcneil57 » Fri Nov 04, 2016 11:36 am

in the video it mentioned a firing schedule if you want it gloss in the bowl, is there one?
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Re: Pâte de Verre Bowl

Postby marykaynitchie » Mon Nov 07, 2016 12:22 pm

To make the glass glossy inside the bowl, I think you can just skip the step of filling the form with talc.

Mary Kay
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Re: Pâte de Verre Bowl

Postby pam.fyvie » Thu Nov 10, 2016 5:19 am

Hi Ed
A spray of light oil would probably work as a separator. I use petroleum jelly & smear that round, you don't need a lot. You can also use shellac.

Pam
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Re: Pâte de Verre Bowl

Postby ddxtr » Wed Nov 16, 2016 5:59 am

I found two firing schedules on the tab called "learn more" on the video lesson page.
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Re: Pâte de Verre Bowl

Postby ddxtr » Wed Nov 16, 2016 6:07 am

Thank you Bullseye for publishing this video lesson, I am about to do a second batch of small bowls after making a wax mold of a small bowl found at Walxxxx store for 1.17. I will use the lesson to vary my technique!
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Re: Pâte de Verre Bowl

Postby ren_kitty » Wed Nov 16, 2016 3:45 pm

Curious, regarding production, is the wax cast reuse able for multiple molds?
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