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Blower Forge needed!


Pat B
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Hello all,

 

I was wondering if any of you could point me in the direction of a company that makes forges with blowers that burn natural gas. I want to put one in at the high school where I teach and I have been told that its a fire code violation to have propane and I must find a natural gas forge that has a blower.

 

If you have any tips I would greatly appreciate it.

 

Hope you all have a great holiday season, dont get too hammered!!!

 

Pat B

Gnáthamh na hoibre an t-eólas

(Knowledge comes through practice)

 

Iron is full of impurities that weaken it; through the forging fire, it becomes steel and is transformed into a razor-sharp sword. Human beings develop in the same fashion. - Morihei Ueshiba

 

my site: http://lfcforgeworks.webs.com/

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Here's a quote from the Mankel Forge website instructions:

 

Natural Gas: Mankel gas forges will operate

on natural gas. If you want to use natural

gas in your shop, contact your gas company

first. You need to make sure that your gas

company can supply at least six to eight inches

of water column pressure for your forge to

operate properly. At least a one-inch supply

pipe is required to supply enough gas volume.

Additionally, a forge set up for natural gas

requires different piping and orifices than one

that uses propane. Hopefully you informed us

of that choice before your order was placed so

that you have the proper fittings.

 

http://mankelforge.com/index.html

 

 

...or you could eliminate gas and flame altogether and go with an induction forge:

 

http://www.bladesmithsforum.com/index.php?showtopic=14373

 

http://www.bladesmithsforum.com/index.php?showtopic=17668

Edited by HSJackson
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Thats great! thank you for the point in the right direction.

 

Pat B

Gnáthamh na hoibre an t-eólas

(Knowledge comes through practice)

 

Iron is full of impurities that weaken it; through the forging fire, it becomes steel and is transformed into a razor-sharp sword. Human beings develop in the same fashion. - Morihei Ueshiba

 

my site: http://lfcforgeworks.webs.com/

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You can find me at: OCPINDUCTIONFORGE.COM

Edited by nakedanvil

[font="Book Antiqua"][color="#0000FF"][size="5"][b]Perfection[/b][/size]

[i][size="3"]is achieved not when there is nothing left to add, but when there is nothing left to take away.[/size][/i][/color][/font]

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The instructions from Mankel makes me think that their setup is a venturi (

Additionally, a forge set up for natural gas

requires different piping and orifices than one that uses propane.

).

 

A blown system should work on NG without any real problem. I run one of my forges at 1 psi line pressure for most operations. The HT forge runs at 4-6, but only because that lets me turn it down to the point where is is just barely running (about 1350 F). The welding forge I also run at 4-6 psi and about 3/4 on the needle valve.

 

A 1 1/2 to 2 inch burner and a 60 cfm fan should do the job. It will look pretty much like this

 

BrnrExp1.jpg

 

BrnrExp2.jpg

 

BrnrT1.jpg

 

The only change I've made is using a floor flange for the connection to the fan. The fans I've been using have a steel case with a round flange, makes everything pretty simple. All of the parts are off-the-shelf.

 

 

This is perfect, I run all three of mine with this fan (or one just like it) The largest is a 10 gallon oil can (the old metal style that bulk oil came in, service stations used them for trash cans when they were empty). It's my HT forge, I don't know how high it will go, but it gets to 2000 F easily.

 

Grants induction forge is the work of the Devil, I want one really bad, but I just don't the space for an altar right now (or another altar is more like it :lol: ).

 

Geoff

"The worst day smithing is better than the best day working for someone else."

 

I said that.

 

If a thing is worth doing, it is worth doing badly.

- - -G. K. Chesterton

 

So, just for the record: the fact that it does work still should not be taken as definitive proof that you are not crazy.

 

Grant Sarver

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I imagine that in a high school environment he will not be able to use "home-built".

[font="Book Antiqua"][color="#0000FF"][size="5"][b]Perfection[/b][/size]

[i][size="3"]is achieved not when there is nothing left to add, but when there is nothing left to take away.[/size][/i][/color][/font]

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The High School I attended used a Johnson trench forge that ran on natural gas

don't remember the model but no one managed to blow it up !!!

And I'm sure some bonehead tried to, It was High School after all.... :rolleyes:

They are, I beleive, still doing business.........

Edited by Clifford Brewer

If ya can't be good don't git caught  !!                                        People who say stuff can't be done need to

                                                                                                        git the hell outta the way of people who do stuff   !!!

Show me a man who is called an expert by his peers         

And I will show you a good man to listen to ......

Show me a man who calls himself an expert

and I will show you an egotistical asshole...............!!

 

                             

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correct, we cant do a homebuilt forge.... Id do it myself if I was allowed.... We have a forge there but its almost in half and not very safe obviously lol. I appreciate the comments and tips. I hope more will chime in so I can get others to point out things not yet said.

 

Pat B

Gnáthamh na hoibre an t-eólas

(Knowledge comes through practice)

 

Iron is full of impurities that weaken it; through the forging fire, it becomes steel and is transformed into a razor-sharp sword. Human beings develop in the same fashion. - Morihei Ueshiba

 

my site: http://lfcforgeworks.webs.com/

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As far as I know, if you want to go with a UL-listed NG forge Johnson is the only one. They're universally considered to be truly awful for anything but sharpening breaker bits, though.

 

 

I agree they're not a great forge, but for basic heat and hammer techniques

they do the job nicely, (ie) high school metal shop.

The trench design allows for multiple pieces to be heated simultaniously

making it a good choice for teaching basics to several at a time,

and as Al noted, it is UL listed and used in quite a few west coast schools ......... B)

If ya can't be good don't git caught  !!                                        People who say stuff can't be done need to

                                                                                                        git the hell outta the way of people who do stuff   !!!

Show me a man who is called an expert by his peers         

And I will show you a good man to listen to ......

Show me a man who calls himself an expert

and I will show you an egotistical asshole...............!!

 

                             

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Did some searching:

the website is..www.johnsongas.com

the model 122 looks like the one I learned on a lot longer ago than I like to admit.... :D

If ya can't be good don't git caught  !!                                        People who say stuff can't be done need to

                                                                                                        git the hell outta the way of people who do stuff   !!!

Show me a man who is called an expert by his peers         

And I will show you a good man to listen to ......

Show me a man who calls himself an expert

and I will show you an egotistical asshole...............!!

 

                             

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