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Thread: New mini foundry/forge

  1. #1
    Senior Member TRYPHON974's Avatar
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    New mini foundry/forge

    It's been a while... but metalcasting is still inside me
    So when I spotted a trashed steel pipe (12"X7") on the street I thought I could turn it into a mini foundry/forge.
    It was in rough shape and needed some attention, had to cut it properly with my cheapo 5" angle grinder. The walls are thick, 1/4", that was quite a task.



    After some more cutting and a cleaning with phosphoric acid, I cut a slice to make the top



    Time to weld some plate to the top:



    Same thing for the bottom (upside down), and no, that's not a bird house! I used a lazy Susan as a rotary welding table



    The burner parts, already tested, modified and approved

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    Last edited by TRYPHON974; 01-03-2017 at 05:06 PM.
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    Senior Member TRYPHON974's Avatar
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    I welded some "feet" and it looks better now:



    It could make a little foundry too

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    Last edited by TRYPHON974; 01-03-2017 at 05:08 PM.
    Jack of all trades, master of none.
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  3. #3
    Sadly your photos are not working
    The only time You're not following your nose is when your going backward!.......Andy (ME) .
    Have you filed in "Who do you think you are?" "War Grade Report" " My photo's"

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    Senior Member TRYPHON974's Avatar
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    Sorry for the pics G+ drives me crazy... I attached some thumbnails. You can see the G+ post if you like it better: https://goo.gl/photos/pk1ySkcL35ewpUQDA
    Jack of all trades, master of none.
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  5. #5
    Looks like a solid small setup for both forging and melting metal. Wrap it with an inch of kaowool and an a 1/2inch of mizzou and it won't become too small for a crucible later. Keep in mind what size crucible you'll be using. Most people say, buy that first and build the forge around it.
    I would consider casting a section for a replaceable firebrick OPPOSITE of the tuyere. This way when in forge mode, the burner hits that wall which will become the floor of the forge. Replaceable brick will help you out as mizzou will not tolerate fluxing metal. Not a big concern if you won't be doing any forge welding in it. Btw, you'll need an exhaust hole in that lid for furnace mode

    I built a dedicated forge, but my plans are probably different from yours. ;-)
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  6. #6
    Senior Member Zapins's Avatar
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    If you want to use G+ to link photos you must organize them using G+ but share them using "picasa web album." You can only embed using the web album login not from G+ directly. And you can only organize and move photos with G+ not from web albums anymore. No idea why they split the two sites in half instead of keeping the functionality in one place but that is the way it is now.

    Great looking forge I'd like to see the burner in action. It looks a bit unusual.

    What are you planning to make with it?

  7. #7
    Senior Member TRYPHON974's Avatar
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    Quote Originally Posted by jagboy69 View Post
    I would consider casting a section for a replaceable firebrick OPPOSITE of the tuyere. This way when in forge mode, the burner hits that wall which will become the floor of the forge. Replaceable brick will help you out as mizzou will not tolerate fluxing metal. Not a big concern if you won't be doing any forge welding in it. Btw, you'll need an exhaust hole in that lid for furnace mode
    Thanks for the advices, I like the idea of the replaceable fire brick. I plan to experiment on the isolation, that's the fun part . I'll make the crucible out of steel after but I've already the diameter in mind: 4/5" depending on the thickness of the coating (and the steel available )
    I'll use it to melt little quantities of aluminum, temper or harden steel and for silver soldering, nothing that requires really hot temperatures.

    The weldings on the lid didn't meet the standards specifications so I did it again




    The hole in the lid is done now:



    Time to design the hinges.
    Jack of all trades, master of none.
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  8. #8
    Senior Member TRYPHON974's Avatar
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    I welded the hinge and a handle.
    Closed.



    Open.
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  9. #9
    Senior Member mutant's Avatar
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    That turned out great! I like the versatility of being able to forge with it. I'm just getting into blacksmithing myself.
    I have ulterior motives for my hidden agenda.

  10. #10
    Senior Member TRYPHON974's Avatar
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    Finally running! Got the fiber today, took only 3 weeks to come from China, that's quick.
    So I wrapped the fiber, coated it with a mix of silicate sodium, alumina and bentonite and fired it.



    Note that the lid is not yet made.
    Tried different air/gas ratio and it works just fine!

    The video https://www.youtube.com/watch?v=pDrY9rnFQu8
    Jack of all trades, master of none.
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