[TheForge] New forge

[Jerry Frost]

A 1" sidearm will bring 600-700 cu/in to welding temp if properly tuned. It 
should have a tube about 8-9" long and a 0.045" mig tip jet or drill a 
0.045" hole. I don't recommend drilling a hole in a pipe for a jet as the 
longer length of the mig tip helps produce a laminar flow which is much 
easier to aim down the center of the tube and induces intake air much more 
efficiently.

If you have pics of it in action feel free to E-mail them to me and I'll be 
more than happy to help you trouble shoot. Please, no meg+ sized files, I 
can see all I need to at around 100k or so.

Jer
----- Original Message ----- 
From: "Geoff Nelson" <gjn.pub at gmail.com>
To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Tuesday, May 01, 2012 10:55 PM
Subject: [TheForge] New forge


> Normally I lurk but it is quiet.
>
> I have managed to do something in-between working on my house and
> working for the money to work on my house. I built a small gas forge
> from an old propane tank. I lined it with wool impregnated with a
> rigidiser. No idea what the product is as I bought it from a refractory
> supplier as it was over runs from a commercial project. The bottom of
> the forge has a hard refractory brick to rest material on. I am using a
> 1 inch side arm burner. Yesterday I decided to make a stirrer for dry
> wall compound and got a length of 8 mm reo to forging heat in less than
> 2 minutes from cold. I am very happy with the performance.
>
> However I am not entirely happy with my burner so I am going to have to
> do some work on that. I think I do not have the correct ratio between
> gas jet size and burner open area. I don't know the size of the orifice
> so I will play with open area rather than rebuild the whole burner.
>
> Geoff
> Drouin, AU
>