Introduction: How to Build a Better Forge


How to build a better forge.

This forge is better insulated than the firebrick forge and keeps a more even heat on the inside.

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Comments

MachF (author)2017-09-21

Erm... I'm looking to make a forge. I don't know a lot about the materials and know that some of them can be harmful. So I looked up whether or not dura blanket kills you upon skin contact and couldn't find anything. It seemed a bit extreme of a reaction and am wondering how accurate your statement is about it being fatal? And also if you are just making that up in a joking way it's misinformation like that which can end up actually killing or injuring a person when they don't pay attention to actual safety information because they think it's a joke. There was a point where you didn't know anything and not everyone understands these jokes as being obvious like the old skyhook and board stretcher stuff. They could easily treat actual safety precautions as a joke and give themselves cancer or blow something up. Don't joke about stuff like this. I got exposed over a period of weeks to friable asbestos and lead due to improper safety warnings, what may have seemed obvious to people in the industry isn't to amateurs I had no idea what I was opening myself up for. Don't do it. And if it is as deadly as you say I find it odd that I can't find any information on something that can cause death upon contact.

John T MacF Mood (author)2016-12-26

I am assuming what we call Rock Wool in the US would do a good job as well, and handle higher temperatures as well...

Brilliant work, I may build this and use Rock Wool and some high temp fire brick. if I do, I'll post a note about how it went.

Slow Motion Walter (author)2012-12-27

I used to work for a company that built, repaired, and maintained smelting, heat treating, and glass furnaces. Whenever we used that type of ''blanket'' for insulation, we would first soak it in AP green mixed to about the thickness of soup. That should make it a bit safer to handle, and maybe even cut down on particles floating around when in operation.

AP green?

davtheman223 (author)2013-05-06

Die? How? whats in that stuff?

I think he is being a little dramatic. Here is the MSDS, Yeah it is a mechanical irritant but that is about all. Think rash and inflimation. Still though gloves and resperator are a minimum like any fiberglass type insulation.

http://www.unifrax.com/msdsappr.nsf/bymsds/m0001

JohnA19 (author)2015-02-14

How long should it typically take from ignition to get a piece of blade steel to red hot?

azimnoch (author)2014-11-10

i used fire cement instead of fire blanket. its rated to 1300 C . Outher shell is small fire extinguisher.

lucien237 (author)2012-10-20

Beautiful! I was talking to my uncle the other day about gas forges, weighing the pros and cons vs a coal forge like the one he has, and the larger working area for popping odd shaped or larger bits into the fire for heating seemed to tip to the coal forge. Leaving both ends of yours open means a long piece can be slid through until the appropriate spot is in position for heating, which is definitely a major plus. Little small maybe, but it's definitely an effective little heater.

szulli-randall (author)2011-10-02

I don't like it. I'm sorry, but I get the fun out of Forging things by actually having to Screw around with the coal and other stuff. I am comfortable with it also. Don't flag me because I am just trying to make my... Unless! You could possibly set it up on a REAL forge and then you can use that as a Back/Front fire! Ooh! Yeah! Sorry I am Really Exited!

lucien237 (author)szulli-randall2012-10-20

This IS a "real" forge. Coal fired forges are more accurately described as "traditional". Don't knock it if it heats the metal properly. I work a cast iron coke forge myself, but I respect gas forges as a legitimate option for working metal.

jparal (author)2011-08-02

Could you replace your special durablanket with fiberglass insulation if you burnt off its resin binding agent before hand, and could you just use normal refractory cement instead of the ceramic stuff?

"i know fiberglass insulation is toxic wen burnt"

Lazy H Blades (author)jparal2012-08-08

In my experience, that only works if you're willing to take the time to replace the insulation material every other day or so. If you use your forge as much as I do then you better be willing to take the time to do so. HOWEVER, if you have enough time and a large amount of unused insulation, go for it. That's what do to avoid spending a bunch of money since I only use a small forge and have a HUGE block of compressed fiberglass insulation from when my grandparents where repairing hail damage.

Smiddyt (author)2012-02-03

I read somewhere that it is very dangerouse to try cutting a propane tank. Even if you think all the gas is out. How can I be sure this wont explode?

Celt (author)Smiddyt2012-07-04

I welded on a 300 gallon tank, I filled it up with water first and then drained it. No worries for sure after that.

trh51 (author)Smiddyt2012-03-03

propane is heavier than air. If you want to be ultra safe, drill a hole on both ends and tip it upside down.

melknoy (author)2012-06-24

You should do a tutorial on video production. This one of the most clear, staight forward videos I have seen on Instructables.

greggspen (author)2011-06-24

Great instructable. Like the recycling of a propane container and making the forge without special hole saws.

Durablanket is a possible carcinogen if fibres are inhaled.

The statement "Remember, If you touch durablanket, You'll Die!" is a bit of a stretch. But you never can be too carefull.

That propane bottle was pretty tough to get through. I admit to break several dremel bits before trying the tin snips. Ah the magic of video.
Thanks for your comments!

Do you have an instructable anywhere about building burners, I've never made one I as really happy with.

Actually I am in the process of making a video and text/pic article on building a burner. I have built a few "ron reil" type burners from various documents I found online, but they all seem to lack some important details that I got hung up on.

Thanks for watching!

My forge is similar to that but more adustable than most. Height ,support location and fuel air mixture all adjust.

Do you use a forced air burner? I've haven't built one before. I found that using a venturi style burner with different ratios between intake/flare size changed the burner atmosphere, aka fuel/air mixture.

i am going to make a forge an going to use a gaz burner like the ones you have in heaters ( used to heat water for radiators in your house) would it be ok? because when you think about it, those things are made to get the hottest possible !

Im sorry, but I'm not familiar with water heaters.

I just submitted an instructable on adding a spark plug to ny forge. Check it out.

Rui33 (author)2011-08-28

Great Job!!

MPLangan (author)2011-08-25

Hello,
Great tutorial btw.
Just one question, how is the burner attached to the forge? Or is it just 'haning there'?

doctorbigdaddy (author)2011-07-07

great instructable, as all of yours are.You are very clever in your designs.

gary.918 (author)2011-07-07

very good.

drewgrey (author)2011-06-23

Is durablanket asbestos? I used something similar that was not.....at least they said it wasn't. Great video

greggspen (author)drewgrey2011-06-25

I've used Kaowool before with good results. No problem to touch, pretty safe on the breathing front (Just don't snort it). Handles the heat especially with a coating of hite ceramic cement like Laitite.

It definitely is not good to inhale. If I remember correctly, it becomes much more prone to releasing airborne fibers once it has been heated, as many other forges Ive seen online use just a bare layer of insulation without any coating.
thanks for watching!

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