[TheForge] Chip Bed Forge

Rich Maynard rich at maynard.org.uk
Wed Feb 22 19:42:30 EST 2006 

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.  
> -Lycos Yellow 
> Pages
> 
> http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.c
om/default.asp?SRC=lycos10

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