[TheForge] propane forge burner book

Mon Mar 1 07:32:00 2004

        John, Thanks for asking that question.  I'm interested in the answer
as well.   :-)

        From the reading I've done it appears a Mig tip would greatly
influence the burner performance, but this can be double edged sword in this
design.
        1) yes you may get more heat, and increased velocity - but
        2) do you really want to create cold spots on the material from
unburned fuels if you increase the velocity of the gasses and it cascades
down to the floor creating cold spots?         This was part of my trial and
error of making this unit work right, by eliminating the straight burners
and getting it to idle better, stopping the chimney effect, and it also
slowed the velocity of the burners when I went to the "Trap" style burners
to solve that problem (of too much velocity and the resulting cold spots and
more scale).  It made the total burn occur 1" off the floor of the forge.
Making the flame longer might get you back to the original problem.

        I've been wanting to test out this theory on the burners/forges I
have here in the shop, but my work load has been nuts lately.  Let me know
how you make out.......if I don't get to it first.
        The sidearm burners are far superior in my estimation as the ceiling
furnace in the shop, and cross draft from opening doors at both ends of the
shop, makes these more "windproof".  My goal is to work outside with the
forge, or actually create a "windproof enough" burner to use it right on the
acorn table to heat my parts on firebricks and get away from moving heavy
cross sections in garden sculptures in and out of a forge all together.
        Basicly creating a "rosebud" run off propane derived from hardware
bought parts that you can just let set a while and not use those high
pressure oxygen driven units that eat two 200 Cu Ft Oxygen tanks in a day of
heavy bending (like on a gate or gazebo project).
        If you point the sidearm burner intakes that are behind the heat
shield, away from a wind source, I've found I can run an 18" shop fan three
feet from the forge and not affect the burners.  If you have other burners
that will perform this well in the wind, please let me know!

Ralph

----- Original Message -----
From: "John Newman" <[email protected]>
To: <[email protected]>
Sent: Monday, March 01, 2004 12:16 AM
Subject: Re: [TheForge] propane forge burner book


>
> Are the burners outlined in this book much hotter than sidearm burners?
> I got a set of Ralph Sproul's forge plans from him and plan on building
> one of these forges in a few months and I am wondering if it it is worth
> buying this book for these new burners.
>
>
>
>
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