[TheForge] gas forge design

Mon Apr 21 14:49:00 2003

If any one is interested, I uploaded a jpg image of a Diesel torch design
that Vance Burns sent me a while back.
http://www.photoaccess.com It's in the forges & hoods folder.
Chuck

----- Original Message -----
From: "R.C.Mundt" <[email protected]>
To: <[email protected]>
Sent: Sunday, April 20, 2003 11:51 PM
Subject: Re: [TheForge] gas forge design

> This idea of burning waste oil is somthing I've been thinking of for some
> time.  I know a guy who drills  water wells and he has some sort of forge
> to  he uses to sharpen his bits, he burns crude oil, he says nothing heats
> like crude oil.  I guess the forge is a fire brick box with a blower on
one
> end, the fuel drips into the air stream, and the bits are stuck in the
other
> end, I never seen it but this is how he explained it to me.
> Randy Mundt
> ----- Original Message -----
> From: "Paul Hewitt" <[email protected]>
> To: <[email protected]>
> Sent: Sunday, April 20, 2003 11:19 AM
> Subject: Re: [TheForge] gas forge design
>
>
> > Ok I like this thread, now I have some questions.
> >
> > Oil fired forge?  I am assuming like #2 Fuel oil, or equivalent.
> >
> > I am interested if anyone has some thoughts on a waste oil fired forge.
I
> > am about to build one as an experiment, has anyone else done such a
thing?
> > In the past i built a transmission fluid fired furnace for a glass
> crucible.
> > Transmission fluid was used because it burns very clean.  Would the
extra
> > carbon from waste oil burn hurt the forge or the pieces being worked.  I
> am
> > going to assume not because we use coal forges...  What better place for
> > carbon soot than coal.
> >
> > I would appreciate and comments anyone might have.
> >
> > Thanks
> >
> > Paul Hewitt
> >
> >
> > ----- Original Message -----
> > From: "Jerry Frost" <[email protected]>
> > To: <[email protected]>
> > Sent: Sunday, April 20, 2003 10:12 AM
> > Subject: Re: [TheForge] gas forge design
> >
> >
> > > Hi Sheldon:
> > >
> > > The shape of the forge is less important than the volume to burner
> ratio,
> > > with one cateat: that there are no crannies the flame can't reach and
> make
> > > cold spots.
> > >
> > > There are a number of forge shapes and when you get down to the nitty
> > gritty
> > > they all work fine.
> > >
> > > In high school we had a very hot square box, oil fired four burner
> forge.
> > It
> > > had two burners on each side of the door, two high and two low, making
a
> > > horizontal vortex. If you needed a general heat you propped the stock
> off
> > > the forge floor in the center of the vortex. If you needed a more
> > localized
> > > heat you placed that part directly i the burner's path on the forge
> floor.
> > > You didn't have as much control of the heat as with a coal forge of
> course
> > > but it was pretty flexible.
> > >
> > > Most commercial gas forges are rectangular with the burners aimed
> straight
> > > down and they work fine.
> > >
> > > Folk place the burners in cylindrical forges in several different
> > > configurations. The two basics are: One, Directly opposing and two,
> > > tangential.
> > >
> > > The directly opposing configuration usually has the burners mounted at
> or
> > > near the top, aiming straight at the opposite side of the forge.
> > >
> > > Tangential mounted burners can be found mounted all over the place.
> > They're
> > > usually high, aimed at the far top side of the forge but some are on
top
> > > aimed down one side and some are mounted on the bottom aimed across
the
> > > forge floor.
> > >
> > > All in all, I don't believe the shape of the forge makes much
difference
> > as
> > > long as there are no flame shadows and there is enough burner for the
> > > volume.
> > >
> > > Regardless I'm still experimenting. <grin>
> > >
> > > Having enough exhaust porting does make a real difference with
naturally
> > > aspirated burners and with cylindrical forges it's common to block off
> the
> > > ends with fire brick, leaving enough gaps so the burner burns freely.
> > >
> > > Frosty
> > > ------------------------
> > > If it ain't forged
> > > it ain't real.
> > > Wrought iron is.
> > > The FrostWorks
> > >
> > > Meadow Lakes, AK.
> > >
> > >
> > > ----- Original Message -----
> > > From: "Sheldon Laing" <[email protected]>
> > > To: <[email protected]>
> > > Sent: Sunday, April 20, 2003 5:17 AM
> > > Subject: [TheForge] gas forge design
> > >
> > >
> > > > I have been working with a coal forge for a while now and I have
been
> > > > considering building a gas forge since last year and I have finally
> > > > decided to do it. I am well acquainted with Ron Reil's excellent
site
> > > > and I have chosen to use a side arm burner type. I still however
have
> a
> > > > few questions regarding the forge shape and design.
> > > >
> > > > 1. Will the forge perform a lot better if it is a cylinder? I want
to
> > > > use a semicircular forge (cut in half cylinder) with a flat base on
> > > > which to rest the steel, will this make it less powerful (i.e. will
it
> > > > not refract the heat to a lesser extent than a cylinder? If so, will
> it
> > > > be a big enough difference that I should change to a cylinder.)
> > > >
> > > > 2. What sort of exhaust area should I leave? Should I leave the one
> side
> > > > of the "cylinder" open or would it be okay to close it up (NOT
> airtight
> > > > of course).
> > > >
> > > > 3. If you have any tips or other advice gained from building your
own
> > > > gas forges please let me know.
> > > >
> > > > Thanx in advance for the help.
> > > >
> > > > Sheldon Laing
> > > > Hephaestus Forge
> > > > Cape Town
> > > > South Africa
> > > > [email protected]
> > > >
> > > >
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