Don't let the image scare you. Having a melting furnace is basic actually. There are plenty of homemade foundry furnace plans that you can use to build your very own DIY steel foundry.
Depending on if you want to use propane or coal, you may have to adjust how you build your furnace, but the steps below should get you well on your way to learning how to make a mini metal foundry!
These homemade foundry furnace plans will teach you how to fabricate the furnace, a lid, the crucible, and a table or stand that is needed to lift it all up off the ground. Feel free to adjust the sizes to your specific needs or follow exactly to be sure of success.
There is a simple list of tools you will need to complete any of the homemade foundry furnace plans you may come across. This design requires:
You will also need these materials to insulate the furnace that you are planning to make and providing the air flow that you need into the foundry.
The first step in your homemade foundry furnace plans will be to measure and mix the plaster of Paris and sand you are going to use to build the insulating layer between your crucible and the steel container.
Homemade foundry furnace plans often require a lid, as this will help the furnace get hotter faster, and will help it retain heat longer.
A crucial part of your furnace plan is the crucible you will use to melt the metal. It should be made of steel, and comfortably fit inside your furnace surrounded by coal.
Any stable table or stand will work to lift the furnace off the ground, but you want to get something that is a tripod. Three legs are much more stable than four, so you can rest assured your new homemade furnace won’t wobble while you are melting metal.
If you know how to weld, you can attach legs of your own design to the bottom of your furnace. This might be a great time to learn a new skill!
Plaster of Paris takes about 24 hours to completely harden, and you don’t want to use your new furnace until you are sure it is completely dry. Once its ready, put your furnace on the stand, place the crucible in the center of the furnace. Start your fire with kindling and add the coal around the crucible. Turn on the air supply and put the lid on. Once its warm enough, add your metal to the crucible, and you have yourself a successful homemade foundry furnace!
That is about everything. I hope you enjoyed the article, and if you having any questions about using your tools and equipment, please visit that section.