Firing Schedule for Inclusions – Bubble Squeeze

Firing Schedule for Inclusions/Bubble Squeeze

Firing with Inclusions requires you to adjust your firing schedule.  By slowing down the ramp rates and adding a hold in the slumping range, you can accomplish a ‘bubble squeeze’ and encourage the air to escape as the glass fuses.  Here is an adjusted fusing schedule for example:

Ramp Rate (F) Hold Temp (F) Hold Time
300/hr 500 15 min
250 1300 10 min – 40 min Bubble Squeeze Hold
200 1550 8 min
9999/hr 1060 45 min
50/hr 940 0
100/hr 740 0
off to room temp

This is a sample firing schedule for float glass, it WILL NEED TO BE TESTED AND ADJUSTED!  There are many variables that will effect your firing success, including glass thickness, inclusion thickness, kiln size, etc.  I’m always happy to help with adjustments, give this schedule a try, then send me photos via the contact form and I can offer suggestions.

Some examples of projects using this firing schedule:

Shelf Paper Burnout Time Lapse

If you’ve ever wondered why your shelf paper smells when you fire it, you are in luck!  We’ve made a time lapse video showing the organic binder burning out of the shelf paper as it fires.  Notice how the paper turns black and then white again, when the paper is white...
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Nichrome Wire Gauges and Uses

Nichrome wire is a very useful thing in the glass fusing world.  Nichrome is shorthand for Nickel Chromium, which are the two main ingredients in Nichrome Wire.  There are several different types of Nichrome, with different capabilities. These specs are from the...
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Triangle Bead Mold Instructions

The Triangle bead mold kit is easy to use and versatile, you can change the size of the beads easily, as well as embellish them with paint and mica.  The basic instructions for triangle beads are included here. Step 1: Prepare Mandrels by dipping in bead release and...
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