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SpeedFire Cone and Burner
SpeedFire Cone and Burner

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The SpeedFire® Cone & Burner is the latest addition to the SpeedFire® family of firing solutions and uses propane to effectively fire:

One Fire Sterling PMC in 45 minutes

PMC 3 and PMC+ in 30 minutes

Art Clay Silver in 15 minutes

Art Clay Copper in 20 minutes

(Times shown are approximate)

Can fire more than of 100 grams of clay creations

Firing surface is about 3" in diameter

Visually see your work while firing

Coleman tanks have about 100 min. of fuel

BBQ tank has about 1500 min. of fuel

NOTE: Test bar testing is recommended. We use 1/2” x 1.5” x 1mm thick samples.

Firing times will vary depending on stove setting and air movement.

Read Tim McCreight’s FIRING INSTRUCTIONS below!

Item# Item Name Our Price Qty Add
56690 SpeedFire Cone and Burner
56691 Bulk Tank Adapter for SpeedFire Cone and Burner
(Out of Stock)
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SpeedFire® Cone & Burner

Firing Instructions

by Tim McCreight

“Firing By Eye”

Judging temperature when metals are very hot is challenging because photographs cannot capture the light phenomenon accurately. Experience is your best teacher and we suggest investing a small amount of clay to master firing by eye. Make a small strip of clay about the size of a paper match and allow it to dry. Light the burner and set the test strip on the wire mesh screen. You will see a wisp of smoke and a flame similar to the flame of a candle as the binder burns away. This will last only a few seconds.

As it heats, the strip will shrink slightly and take on a pinkish color. This shifts to a yellow-orange color that literally radiates outward. This is not a color you could duplicate in paint or photograph because it has a glowing quality. This is the color you want to hold for 45 minutes (when firing One Fire Sterling PMC). Memorize this color and you will have mastered firing by eye. This applies to all silver clays fired with the SpeedFire™ & Burner.

But to complete your education, turn up the heat slightly and watch what happens. You will see the surface of the test strip appear wet, a change described as “sweating.” You will then see the edges of the strip soften and curl as the strip starts to melt. Now that you know what this looks like, you will be able to turn the heat down as soon as you see your artwork start to sweat. And aren’t you glad that you learned this on a test strip instead of a treasure you worked on a long time!

…Tim McCreight

Additional firing notes:

In addition to all grades of fine silver clay, it has also proven to be an ideal firing method for the recently released Art Clay Copper allowing a hands free firing time of just 20 minutes without the cumbersome task of holding a torch on the copper clay piece for 5 or more minutes and can fire larger pieces at one time than can be done with a torch. Just pay close attention to firing color to prevent over firing.

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