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I Forge Iron

Another help me build my forge thread. :)


Mcmurder77

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Hello all. Now I know you’re probably tired of seeing the “help me with my forge” posts and being on many other forums where you get new people asking questions it can get old. I am hoping the lurking and reading I have done beforehand will eliminate some of that. :)

I have decided to build my forge rather than buy one, and I’m doing so have entered and whole new rabbit hole to fall into. 

My designs ideas are as follows:

ribbon or NARB for my burner, probably propane very slightly and highly unlikely that I will try and connect to my natural gas I have at my house just due to where the existing connection points are, and that I may even take it to a friends shop to share with him  

size; I’m really unsure, I don’t want it to be too skinny or long for efficiency/useable space ratio. My initial thoughts are 4-6”h, 8”w, 16”l

Insulation;

2” koawool on the bottom with 1/2” kastolite 30, and Mizzou. How much Mizzou should I use? Should I then also use ITC-100? Or is that more for other surfaces?

2.5” ceramic bricks for the sides,

and 1-2” of koawool and kastolite for the top. 

My intention is to use the forge for Bladesmithing, and some blacksmithing projects. I’m sure as my skills and whatnot grow I will branch out more but at this time I think it’ll be a good start  I would also like to be able to use a 20lb propane tank for my fuel source, of that isn’t feasible then please let me know. I am a sponge and the wealth of knowledge here is my water. 

 

Is the ceramic firebrick for the sides a bad idea? Am I better off using the koawool and refractory? 

Thank you in advance for your patience and support.

-David  

pictire is of a Forge I used in a class and it is what I am using as my inspiration  

 

 

 

49E2361C-FF83-4237-BEAC-143835B4020C.jpeg

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I am on page 13 of the forge building 101 page. Holy smokes that has been a lot of reading. :)

Wayne, your page was one of the first things I came across which is where I learned about the ribbon burner concept. One thing lead to another and bam, i found myself here. 

So to make sure I am following along correctly and taking the correct notes here are my new theories/questions. 

#1 for my first forge I should try and get one of the used Freon tanks, or helium bottles. Line it with koawool, rigidize it with fumed silica, apply a refractory coating (Kastolite 30) then use something like plastix for a sealant/ reflective coating? Cut andoor in the back for pass through and or exhaust vent if needed. Since I plan to go the ribbon burner route I should do a 4”x4” burner either with a blower, or Frostys T burner and NARB set up? As far as the forge floor is the ceramic brick or firebrick better, or is there a better? Should I coat the floor brick with refractory as well to get it more flux resistant or is that a waste of time?

#2 

If I am going to build something other than a cylinder forge D shaped is better and I can do that by making a box or rectangle forge and building the ceiling/walls in a some fashion with koawool and making it rigid? Also I am still unclear as to whether or not the ceramic block would make adequate sidewalk insulation. 

I will keep reading the post, and probably come up with more questions or clarification on subjects. :)

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I think you'll find that ribbon burners work out best in larger forges, like a five gallon cylinder shell, and worst in miniature forges such as non-refillable Freon or helium cylinders; just something to keep in mind. I have little doubt that miniature ribbon burners will be worked out in time...

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Typically a tunnel shaped mini-forge has a 6" diameter inside, minus the flattened area of its floor.

Typically a tunnel shaped five-gallon forge has a 9" diameter inside, minus the floor area.

Typically, a half-muffler mini-oval forge has a 9" width to match the larger tunnel forge and the economy of the mini-tunnel forge.

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