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Tristan T

2 brick forge not working

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I need help with this two brick forge i made following instructions from the youtube channel outdoors55. With two burners going at once i was able to get half the knife up to non magnetic. However, just to get half the knife up to non magnetic i had to let it sit for 20 minutes and then move it back and forth. I kept at this method for almost 40 minutes and then gave up because i could not get it non magnetic throughout the entire blade. Btw i was using 1084 steel and attempting to normalize twice then quench. This is my second failed attempt at a forge so help would be very much appreciated.

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Edited by Tristan T
Needed to add photos

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It's likely that your forge volume is too small for two burners, and you're just blasting unburnt propane out of the door. Try it with just one burner.

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Id think more likely your heat is being directed on that there hot spot and isnt being dispersed throughout your forge.

Burn trail.png

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Ok, do you have any suggestions for plugging the holes i've already made? Also do i need a hotter burner or will the bernzomatic torches work? 

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If those are cast brick(or not) then plain clay or bentonite clay/ aka cheap kitty litter will work just fine. Now i believe those tips should work but in my opinion id switch to a broader brazing torch tip. theyll consume more fuel but should certainly provide adequate heat. if your forge is for heat treating and minimal forging then that shouldnt be an issue.

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Your chamber is way too small, as are your torch ports.  Like Jerrod mentioned when you asked about it last week, those little torch heads need a fair bit of open space around them to entrain enough oxygen to maintain combustion.  You need to hollow out most of the brick, leaving only a thin shell.  The torch ports should be at least 1" diameter, and the tip of the torch should not enter the hole, but rather should be about 1/8 - 1/4" outside.  There's lots of good stuff on youtube, but there's more utter nonsense.  ;)

 

This two-brick can weld:

two-brick forge.jpg

 

It's still not an even heat, though.  Any blade longer than about 2.5" has to be stroked through the hot spot.

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Its angled down my friend. Also appears youre now using one torch.

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1 minute ago, JohnK said:

Its angled down my friend. Also appears youre now using one torch.

Im following alan longmires previous instructions. also i tried angling it like in your diagram and it still isn't working.

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Brick forges and small torches are not a good option.  You will spend a lot of time and money trying to go that route.

Check out the Build a Gas Forge and the Ribbon Burner attachments on the Forge Supplies page at www.WayneCoeArtistBlacksmith.com.

Let me know if I can help you.

 

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Looks like the torch burner is just too small for that use.

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I agree with Alan. That's why I suggest using a brazing tip instead of the jet style tips. It'll consume more fuel but will generate much more heat, if you intend to continue on using torches that is. @Wayne CoeI believe he's heart set on using torches. Could be $ or where he lives ect...

Edited by JohnK

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You do appear to need a better (more BTUH output) burner.  Check out a MAP gas torch as a possible option, or if you are handy fab up a quick 1/2" Frosty TEE burner.  I also recommend you use some of your previous failed experiments to make a proper insulated door and something else other than rolls of packing tape to support your forge.

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