[Stoves] Fire Stump / stump-incuts

[rongretlarson at comcast.net]

Martin 

The videos of this approach show them as being interesting and unusual. Is there anything at all practical? It seems you had one ignition in a horizontal position; I wonder if you tried it vertical? 

With the wrapped aluminum, you can have more control of airflow, 

My interest is in whether there is any configuration that ends up with charcoal? 

Thanks for the continued information and photos. 

Ron 

----- Original Message -----
From: "Martin Dr. Boll" <boll.bn at t-online.de> 
To: rongretlarson at comcast.net 
Cc: "Frans Peeters" <peetersfrans at telenet.be>, "Frank Shields" <frank at compostlab.com>, stoves at lists.bioenergylists.org 
Sent: Thursday, July 21, 2011 2:01:38 PM 
Subject: Re: Fire Stump / stump-incuts 




Ron, 

- Frans, Frank and „Stomp-Stovers“ - 



Here some pictures from a fire-stump. It is laying around in a garage for a year of three. I just took the pictures to explain, without need of many words. 



With such a type (but with bark) I did my test as I described in the stoves-list. But that burn was without aluminium-foil. 



I was discontent with my first test, which I made in summer last year. The burn of the dry pine-stump did not happen as symmetrically as I expected, and the stump had several times to be turned for using the wind direction to direct the burn. 

The in-cuts from the bottom were done too high, so the stump burnt too early in pieces. The central channel appeared in begin too small. (A commercial fire-stump in the web has on top a sort of dish/cup which seems to work better) 

. 

The idea to wrap it (in different test in somehow different manners) with aluminium-foil came by reading the thread about the fire-stump. So I cannot say anything about that. I have not yet planned how to play with the foil-wrapping. Here is for the moment lack of time and appropriate weather. But possibly is someone interested in that first step to struggle further. 



The difference with this stump is: 

There is a channel from top to bottom, not made by a drill, but by chain-saw-in-cuts in 60° angles 



Picture 001 shows that by a metal-stick going through the central-hole. 

Picture 008 shows (with good will of the viewer) that the asterisk has a central channel, going through. 

Pictures 010 and 012 show the different position of the in-cuts from bottom in comparison to the in-cuts from the top, 



-By going further with fire-stumps, I think it would be useful to remind the old-fashioned type of saw-dust –stoves with the central hole. 



Regards 

Martin
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