[TheForge] Chip Bed Forge

Wed Feb 22 23:14:40 EST 2006

Hi Rich,
Thanks; that was a helpful description. I assume the forge is running on 
natural gas too. It is all excellent. I'm just a greedy guy, and always want 
more from a tool. However, there is a lot to be said for the stuff that's 
already out there on the used tool market--in England. If we Yanks had an 
inexpensive way to ship it here, there wouldn't be any left  for you guys 
:-)

You know that my own interest is pretty off center from what most here want 
to do with them. Since you have built your own portable tube forge, and also 
use a chip forge, I can't think of anyone better placed to answer practical 
questions about the differences. How about a little more writing from you on 
this subject?
Mike P.
----- Original Message ----- 
From: "Rich Maynard" <rich at maynard.org.uk>
To: "'Sponsored by ABANA'" <theforge at mailman.qth.net>
Sent: Wednesday, February 22, 2006 4:42 PM
Subject: RE: [TheForge] Chip Bed Forge

The HME ceramic chip forge that I have is much simpler than that. Combustion
seems to happen in and around the chips, and when first lit there is a blue
flame visible above the chips.

Once it's going, however, and the chips are glowing orange/white there is no
flame left at all; the gas seems to burn completely within the very hot
chips.

Rich

> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Mike Porter
> Sent: 22 February 2006 18:14
> To: Sponsored by ABANA
> Subject: Re: [TheForge] Chip Bed Forge
>
>
> Chris K,
> You are not understanding that the forge has a separate fire
> box below the
> ceramic media, with a separating layer of cut kiln shelves
> turned on edge,
> and acting as a support grate. The grate completely separates
> the flame area
> from the ceramic media--giving as much space as you need for
> the flame to
> filter through the media, and for buoyancy to more than overcome back
> pressure. It also allows the "flame box" to be dual walled,
> with a row of
> holes in the inner walls above the ceramic grate, and two
> outer holes kept
> low and placed on either side of the burner; outer holes to
> be closed with
> movable chokes until the fire box heats up. Thus, instead of
> throwing away
> excess energy, while complicating the job of insulating the
> forge, most of
> it is recycled. Also, the superheated air does not impact the
> burner, as
> schemes for mixing heated air in the burner always do.
> Instead, the burner
> is actually cooled somewhat by incoming air.
>
> Now you also know that it can be called a recuperative forge,
> and why any
> burner will likely work as well as any other burner in it
> (secondary flames
> becoming a non-issue in this design). So, do my statements
> about sometimes
> removing the media and using the "forge" in various other
> configurations
> make more sense? I also recommend a lower layer of 1 1/2"
> refractory balls
> for thermal loading and an upper layer of semi-hollow clay balls for
> insulation and ease of parts movement. Construction details
> like installing
> burner collars, and how to handle perlite insulation or
> insulating bricks
> are already covered pretty thoroughly in Gas Burners, in the
> forge cart
> chapter. All you would do is put side walls on the cart bed,
> build a dual
> wall chamber with a top grate, and move the burner position
> from bottom to
> end. For that matter, the burner doesn't have to be moved, it
> would just be
> a more even heat that way. So, people who have already built
> the forge cart
> don't have very much left to do.
>
> For those who haven't built the cart already, I'd recommend
> building the
> chip forge as a separate heating unit that can be used with other
> appliances, like kilns for instance (a kiln on a cart could
> start getting
> pretty tall :)
>
> Mike P.
>
> ----- Original Message ----- 
> From: "Chris Kilpatrick" <crimsonkil at lycos.com>
> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Wednesday, February 22, 2006 8:01 AM
> Subject: Re: [TheForge] Chip Bed Forge
>
>
> Normally aspirated with the clay media interfering with the
> flame?  Maybe I
> am not understanding how this works, but I imagine a flame
> coming up through
> the chips which offer back pressure and make a coned flame impossible.
>
> What am I not understanding?
>
> Chris K
>
> > ----- Original Message -----
> > From: "Mike Porter" <michael.a.porter at comcast.net>
> > To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> > Subject: Re: [TheForge] Chip Bed Forge
> > Date: Tue, 21 Feb 2006 18:45:26 -0800
> >
> >
> > Chris K,
> > It can run fan blown or naturally aspirated. Either way, it doesn't
> > make smoke. Mike P.
> >
> > ----- Original Message ----- From: "Chris Kilpatrick"
> > <crimsonkil at lycos.com>
> > To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> > Sent: Tuesday, February 21, 2006 3:33 PM
> > Subject: Re: [TheForge] Chip Bed Forge
> >
> >
> > Mike,
> >      I am assuming forced air on these, yes?
> >
> > -Chris K.
> >
> > p.s.:  How does this differ from my forge that glows and
> heats through
> > convection, conduction and radiation?
> >
> >
> >
> > -- _______________________________________________
> >
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>
> It is I who formed the blacksmith,
> who fans the flame into a fire and
> fashions a weapon fit for it's work.
>
>
> -- 
> _______________________________________________
>
> Search for businesses by name, location, or phone number.
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> Pages
>
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