Setting a Neautral Flame: Flameworking Lampworking Glass Pipemaking Supplies and Information - Sundance Art Glass Center
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Setting a Neutral Flame

To test for a neutral flame, Glass Alchemy recommends heating a rod of 987 Amazon Night to a warm orange glow, then allowing it to cool. If your flame is neutral, the rod should be the same color coming out of the flame as it was going into the flame. If the rod is a light sky blue or has a metalic sheen, the flame is reducing and needs to be adjusted. The most common fix is to decrease the propane content.

  • If the surface of the glass looks like an oil slick, decrease the propane at the torch.
  • If the surface of the glass is a heavy metalic, decrease the regulator in 1/4 pound increments.
  • If the surface of the glass is sky blue, it is very reducing. Decrease the propane at the regulator, usually in half: i.e. decrease from 2 pounds to 1 pound of pressure.

In some cases, increasing the oxygen will burn the extra propane in the flame resulting in a neutral flame.


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Sundance Art Glass, 6052 Foster Rd., Paradise, CA, 95969-3121, USA
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