[TheForge] gas forge design

Mon Apr 21 01:38:00 2003

Actually what funny is in Oregon we get tax credits for alternative fuel
usage, and we are EPA exempt from any regulations if we are using recycled
waste oil!

It don't get any better than that.  and a simple water water stack scrubber
on the furnaces would make em even happier.

----- Original Message -----
From: "Peter Fels And Phoebe Palmer" <[email protected]>
To: <[email protected]>
Sent: Sunday, April 20, 2003 10:27 PM
Subject: Re: [TheForge] gas forge design

> Paul;
> Allow me to maul both lingual and environmental sensibilities here and
> cover for you...Todd is a good guy and we all kvetch about one thing or
> other.
> My first forge was powered by a $2 vacuume and drain  oil...it was great
> fun.
> First, you have to filter drain oil pretty well in order to meter it.
>  Second, it is  a sign of descretion (see)  as well as pragmatism to
> start your burn with a lighter fuel. Contaminated diesel often goes for
> a penny a gallon.
> Third, you need a stack to get the fumes out of nose range.
> 4th, you need a healthy blower. If you use old vacs..have several extras
> handy.
> 5th, It helps a lot to have a separate fire box within the forge.
> When the little firebox is up  to a pleasant white heat, it pretty well
> takes care of any organic molecules and much of the rest seems to
> deposit on the firebox walls.
> Burning drain oil ( wait till the firebox is hot) is something best done
> in private.
> I never said any of this...........Pete
>
>
>
>
>
> Paul Hewitt wrote:
>
> >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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