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GPK Deluxe KK-12 (Kwik Kiln® 12") Propane Fired Furnace Kit

Part Number DKK12
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GPK Deluxe KK-12 (Kwik Kiln® 12") Propane Fired Furnace Kit
GPK Deluxe KK-12 (Kwik Kiln® 12') Propane Fired Furnace Kit
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Deluxe KK12 (Kwik Kiln® 12")

Our largest propane fired furnace can smelt ore concentrates, fire assay, melt pure metals, old jewelry... it can do it all, in larger quantities. You will be surprised at how quiet it is, too.

We offer the only sectional kiln that allows for easy removal of the crucible before pouring. The liner of the kiln is constructed in a layered and stacked configuration that is less susceptible to cracking from thermal expansion and contraction, as each layer can expand or contract separately. Another feature of the layered and modular design is that individual sections of the kiln liner can be replaced at a fraction of the cost of replacing the whole liner, in the event of a serious spill or boil over of the crucible.

The KK-12, as with all of our Kwik Kilns®, is constructed of a stainless steel tension adjustable jacket, surrounding alumina silicate refractory insulation that comprises the interior of the kiln. The refractory insulation has an operating temperature rating of 2300° F.

Included in your deluxe kit will be a custom USA built precision machined bi-metal brass tipped propane burner, 6' Hose with 60psi regulator, gauge and needle valve.


Model name: KK-12

Height:           12”

Width:            12” Diameter

Chamber:       6.25” Diameter x 7” Tall

Weight:          19 lb

Propane Fired (Do NOT use Mapp Gas, Butane or any other gas)

Stainless Steel Exterior

Alumina Silica Refractory Interior rated for up to 2300F

Modular design – provides easier access & removal of crucible from chamber for pouring.

Deluxe Kit includes:


Crucible Pedestal

Analog Pyrometer

Custom made 160,000 BTU Bi-Metal Burner

5' Propane Hose

60psi Regulator with Gauge & Needle Valve

A4 Clay Graphite Salamander Crucible 4.5” TOD x 5.5” Tall, Brass capacity 12.3 lbs ·        

GPK Premium Black Gold Flux 4 lbs

GPK White Melting Flux 4 lbs

Bone Ash

Liner Restore

Instruction Manual and Smelting Tips

Recommended Accessories

A4 Clay Graphite Salamander Crucible 4.5” TOD x 5.5” Tall, Brass capacity 12.3 lbs

A5 Clay Graphite Salamander Crucible 4.88” TOD x 5.98” Tall, Brass capacity 15 lbs (6.8 Kg)

GPK Premium Black Gold Refining Flux 10 lbs

GPK Melting Flux – for silver or copper 10 lbs

VIDEOS:                    KK12 Preview; Pouring & Intro 11/25/2016             Final Silver bars 11/25/2016            KK12 Silver Smelting & Charging 3/07/2018


Additional Accessories available elsewhere:

  • Welding gloves, apron, helmet, fireproof table
  • Tongs - we recommend simply purchasing hinged fireplace tongs at your local hardware store.
  • Conical Slag Mold - large capacity cast iron mold



This kiln is not a toy and ultimately generates temperatures in excess of 2200° Fahrenheit. Use at your own risk and follow all recommended and common-sense safety precautions. Sellers are not responsible for accidents or injuries caused by hot kilns or contents. Using one purchased from this seller acknowledges that you use it at your own risk and understand all the hazards associated with smelting concentrates and metals.

This kiln is designed to be used with Propane only. Use only as directed. Firing the Kwik Kiln beyond the operating effectiveness of the refractory kiln materials, which are rated for up to 2300° Fahrenheit, with or without a pyrometer, or using any other type of fuel or burner, will null and void any written, expressed or implied warranties. 

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