How to make a homemade Mini Forge


Follow along in this video as Mike from The Geek Pub makes a home made mini forge (fire brick forge). This project is really simple, and this little forge will allow you to heat metal for all kinds projects like crafting jewelry, knife making, or even small scale blacksmithing projects.

This project requires a firebrick, which might not be readily available in your area. You can usually get them at an Ace Hardware or a BBQ store (that sells fire pits). You get one from for about $5 with free shipping.

The main source of heat in this project is a small propane torch. Be sure to use it in a well ventilated area.

* Firebrick:

Get the PDF Plans:

How to make a homemade Mini Forge

NOTICE: This project can be dangerous and requires adult supervision. Risk of burns, cuts, and loss of fingers and vision. Be sure to follow all safety precautions and wear eye protection at all times. You assume all risks!

If you build this project, make a video and post it as a video response to this video! We want to see it, and we want our viewers to see it!

Project Inspiration: Makermook

Parts List:

How to make a homemade Mini Forge



  1. No criticism but that looks more like Autoclaved aerated concrete (AAC) than fire brick – as I can't easily source firebrick I actually use that for my furnaces – although very much less effective than "real" fire brick it does do the job – I was just curious about whther that was fire brick or not?

  2. Can you make a video on how to make a mini Forge and or just afford so I can melt silver. And or aluminum. maybe some copper I don't know for shipping center of birth for some reason I think I like it better because I feel like the leftovers fall out the side of it sideways but I want to do the fire brick meant that I just don't know how to or where to find the break

  3. would there be any advantage if you drilled the inlet hole so it was tangent to the fire chamber? maybe so that the fire kinda goes around the chamber instead of having a single area that's concentrated?

  4. have you looked into induction heating? it seems more practical and no need for a torch. a diy set up is maybe $150 or so. I'm making one and the preliminary results are impressive. the capacity is about 2.5" by 2.5 but its essentially a spring that you can stick conductive material in and it can heat up something longer than 2.5". it takes seconds for a screw driver to turn red hot. it is good for bluing metals like my metal top pic on the left perfect to harden or annealing tools of this nature. anyway that's my two cents. your furnace would be a cheaper alternative though.

  5. i like how you explain everything as you go and list the material needed int he beginning, however i am contemplating buying an entry level forge or building one for knives, so if you had the time and were compelled, building a larger one, say ID 4"x4"x12" would be cool. just a thought, but i could prob take the concept and figure it out.