JHCC

New JABOD box of dirt forge (picture heavy)

37 posts in this topic

Nice build.. I like it.. What did you end up getting for bowl depth?  did you make it a double bowl.. Larger bowl with a smaller bowl below the tue iron? 

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Bit of an update. I took some time today to clean out the firepot on the JABOD, and here's what it looks like after a few months of somewhat sporadic use.

 

IMG_3369.JPG

 

As you can see, the firepot has taken quite a beating and is now about 8" across and 6" deep. The opening of the tuyere is behind the 3-1/3" mark on the ruler. 

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Here's a view from another angle. The tip of the 1/4" rod is pointed towards the tuyere. 

IMG_3370.JPG

There were some pretty big lumps of clinker and vitrified clay stuck to the walls of the bowl. I broke these off with a hammer and chisel before taking the photos. 

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The important mesument is from the top of the tuyere, looks like a inch under a 3/4" schedual 40 pipe, so just at 4". I could that making charcola from scrap wood will give you som clinker, as like coal their is a bit of sand and dirt in it (as well as nailes). But dang if we can't get you new guys started on the cheap!

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56 minutes ago, Charles R. Stevens said:

But dang if we can't get you new guys started on the cheap!

Dirt cheap!

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We need to keep cheap, easy to build forges, alternitives to the london pattern anvil, hammers and forging basic tools from easaly salvaged materials out front in the forum. 

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If someone would please distill down the information available and make an article for EACH subject and I will post them on the site so we can use them as reference.

Post it under a new thread and I can relocate it if needed.

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When I built mine I had a problem especially in the start with clinkers forming from the sand in the mix melting into a crude glass, the problem finally started going away a few fires ago. Is there a way to prevent this on my next build or is this a problem that I will have to deal with. My only solution is to just add less sand but I have sand as an abundance so that is something I would like not to have to do.

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As I don't have much sand, I have no personal experiance. I have gleaned a few things tho.

Commercial side blast forges have been filled with fly ash and clinker, so even new comercila English forges fight this when sand is used as the initial filler. 

TO and other smiths have advocated adding wood ash to the Adobe mix to combat this. 

A 1/4" thick coating of clay may be the answer in your case. Giving a smoth hard ceramic fire bowl backed buy sandy soil

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The packed clinker and soot is a good alternative as well.. 

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Until somewhat recently I used sand as well.  I found that the act of cleaning the firepot mixed it up to the point that I always had a fresh bed of sand and ash for each new fire.  As the percentage of ash increased the problem diminished a lot but it never went away.  I gave up and ditched the sand.  I added a small brake drum for a base and currently use brick to shape the firepot.  At some point soon I will be making the firepot out of a clay mixture but will likely keep the steel base.  I like using my poker to disturb the base of my fire so that ash drops out of the bottom of the brake drum.  It allows me to keep the fire "cleaner" because my blower is a bit under powered and can't blow through a lot of ash buildup.  I like having the benefit of an ash dump like a bottom blast but on a side blast.

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