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Firing schedule for metal inclusion (small)

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Firing schedule for metal inclusion (small)

Postby lldurant29 » Thu Jul 19, 2018 10:27 am

I'm testing out brass inclusions - these are small pieces (about 1/2 inch) that will go into a pendant or bracelet. The brass does have texture, but it's relatively flat. I know that all kilns are different, etc, but I'm having a hard time finding a good schedule guideline with temps for metal inclusions. Has anyone been successful in this? I have a Paragon. thanks for any insights!
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Re: Firing schedule for metal inclusion (small)

Postby marykaynitchie » Mon Jul 23, 2018 8:41 am

I think it is likely that your pieces will break due to incompatibility if you use brass inclusions. That might be why you are not finding fusing cycles that mention brass.

Gold leaf, silver foil (really thin) and copper foil can all be used successfully as inclusions. We can point you to project instructions that use some of these materials.

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Re: Firing schedule for metal inclusion (small)

Postby jestersbaubles » Wed Aug 01, 2018 7:10 pm

You can fire brass in glass. It would be no different than any other metal inclusion. I would start by using a conservative ramp, bubble squeeze, and double the annealing schedule from what you would normally use.

https://glasswithapast.com/metal-inclus ... sed-glass/

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Re: Firing schedule for metal inclusion (small)

Postby michaelcmace » Fri Oct 19, 2018 7:31 pm

You didn't say how thick the brass is. I know brass foil works as an inclusion.

Roy Kapp of Delphi does a great class on metal inclusions in glass. I took it at this year's craft & bead expo in Las Vegas, and it covered a lot of different metals, including silver, gold, aluminum, and two thicknesses of brass foil. I highly recommend the class -- you get to see lots of samples and have the chance to make some projects of your own.

I used the time to do a bunch of 2-inch test tiles with various metal combinations. Here's a link to a photo of one of them, with copper leaf (which turns into transparent blue bubbles) layered over 44 gauge brass foil (left) and stainless steel foil (right). At some thicknesses, the brass foil makes dense bubbles on its surface.


These are sandwiched between two 3mm pieces of Tekta Bullseye glass and fired to full fuse.

As for the firing schedule, for foil you can use a standard full fuse schedule with a bubble squeeze to get the air away from the inclusion.

I really recommend Roy's class.

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