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Tool Time Let's talk shop. Equipment, Tips & Tricks, Safety issues - Post it here.

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Old 03-03-2013, 06:18 PM
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Fulmaduro Fulmaduro is offline
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Compressed Air Tank Forge

I just recently finished building my first forge out of a used portable compressed air tank, single venturi propane. I got the tank free from my neighbor. 1" Inswool, 1/4" thick Satanite (2 coats), 2 thin coats ITC-100, 3/8" thick floor of Bubble Alumina. I bought the materials and venturi kit from High Temp Tool & Refractory, and I highly recommend them.

The venturi is angled properly thru a 10 0'clock mounted burner seat and gives a great swirling effect. The first blade I forged in it got hot too quickly at 5psi so I turned it down to 3psi. My knifemaking mentor and teacher here in Kansas City said it definitely seems like it will reach welding temp and we will try is soon.

The tank end cap was cut off with an angle grinder, as were the two door openings. I ground out 4 steel studs to weld to each side of the endcap and body to hold springs and retain the end cap. I can easily remove and reline if needed. Welded in the burner seat and 2 angle iron rails on the back opening to facilitate a piece of 1/2" Insboard to use as a door. Painted with black header paint that did not discolor after 2 hours of forging.

Total cost about $185. I found the Satanite to be fragile if anything rests on it at temp and I decided to reline the mouth of the forge with Bubble Alumina, which I found to be awesome for the floor and like concrete. I love that stuff so far. Any comments are welcome. Thanks.

Tony Z

(CLICK ON PICS FOR MORE PICS)

Portable Compressed Air Tank Forge


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Last edited by Fulmaduro; 03-03-2013 at 06:35 PM.
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Old 03-03-2013, 09:57 PM
Toolferone Toolferone is offline
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Looks great! It is great to see the wip progress pics.
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Old 03-04-2013, 07:22 AM
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Fulmaduro Fulmaduro is offline
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Thanks Toolferone. I always love pics as they usually are of the most help. I plan on making a short video of the forge running to get a better idea. If there were no pics or videos before I started this build it would have been so much harder to design and build.

Tony Z


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Old 10-17-2013, 08:38 PM
sanch sanch is offline
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Looks great
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Old 10-19-2013, 09:11 PM
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Thanks Sanch, it has been working great and has been bombproof ever since I finished out the sides with the Bubble Alumina. Amazing stuff.

Tony Kansas City, MO


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Old 10-23-2013, 06:50 AM
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BarryC BarryC is offline
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Nice build! You can easily convert it to a blown burner forge if you have trouble welding in it.


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Old 10-23-2013, 07:20 PM
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Fulmaduro Fulmaduro is offline
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Thanks Barry. I have a piece of cable I plan on attempting to weld soon in it. Hopefully it will be good.

Tony Z
Kansas City, MO


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