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<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Ron,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'> The pictures were
taken with horizontal laying stump, because the vertical pictures did not show
the type of in-cuts very well.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>But I only burnt the
stump upright ( circle-surface standing on bottom).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'> I thought there was
enough air coming through the lower side-in-cuts to feed the central hole.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>The burn was very uneven
(and not symmetrical). And the rest of the stump – (it cracked apart because
the bottom-in-cuts were going to far upwards) was partly un-burnt wood with
some charcoal at the inner side. The rest was more like a fire that died without
burning to the end, than a gain of charcoal.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Possibly the very dry
condition of my fir-wood (it was cut in log and with asterisk in-cuts at least
a year before burning was done) made another burn-pattern then more fresh wood.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>I have another 3 stumps with
bark and in-cuts (only cross-in-cuts from top) resting without my attraction in
dry condition.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>If I would (expect much
and long would! </span></font><font size=2 color=navy face=Wingdings><span
lang=EN-GB style='font-size:10.0pt;font-family:Wingdings;color:navy'>J</span></font><font
size=2 color=navy face=Arial><span lang=EN-GB style='font-size:10.0pt;
font-family:Arial;color:navy'> ) start another experiment series, I would then prefer
to set the stump into a short big-sized stove-pipe, or at least put a small
metal girdle around.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>By doing with a
stove-pipe surrounding (some controllable air from bottom as condition to work
with) of the stump, it would be interesting with a concentrating plate on top
of the stove-pipe.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>So it would tend in the direction
of an old-fashioned saw-dust-stove. I can imagine that could make some
torch-like flame, possibly with need of little air-push from a fan.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>In that configuration, I
can imagine some charcoal-production. – But make it somehow possible to
cut off the primary air at the end of the out-gassing burn. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Regards<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'> Martin<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>Von:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
rongretlarson@comcast.net [mailto:rongretlarson@comcast.net] <br>
<b><span style='font-weight:bold'>Gesendet:</span></b> Freitag, 22. Juli 2011
00:59<br>
<b><span style='font-weight:bold'>An:</span></b> Martin Dr. Boll<br>
<b><span style='font-weight:bold'>Cc:</span></b> Frans Peeters; Frank Shields;
stoves@lists.bioenergylists.org<br>
<b><span style='font-weight:bold'>Betreff:</span></b> Re: Fire Stump /
stump-incuts</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>Martin<br>
<br>
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?<br>
<br>
With the wrapped aluminum, you can have more control of
airflow, <br>
<br>
My interest is in whether there is any configuration that
ends up with charcoal?<br>
<br>
Thanks for the continued information and photos.<br>
<br>
Ron<o:p></o:p></span></font></p>
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<hr size=2 width="100%" align=center id=zwchr>
</span></font></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black;
font-weight:bold'>From: </span></font></b><font color=black face=Arial><span
style='font-family:Arial;color:black'>"Martin Dr. Boll" <<st1:PersonName
w:st="on">boll.bn@t-online.de</st1:PersonName>><br>
<b><span style='font-weight:bold'>To: </span></b>rongretlarson@comcast.net<br>
<b><span style='font-weight:bold'>Cc: </span></b>"Frans Peeters"
<peetersfrans@telenet.be>, "Frank Shields"
<frank@compostlab.com>, stoves@lists.bioenergylists.org<br>
<b><span style='font-weight:bold'>Sent: </span></b>Thursday, July 21, 2011
2:01:38 PM<br>
<b><span style='font-weight:bold'>Subject: </span></b>Re: Fire Stump /
stump-incuts<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Ron,</span></font><font color=black><span
style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>- Frans, Frank and
„Stomp-Stovers“ -</span></font><font color=black><span
style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'> </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>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.</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'> </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>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. </span></font><font color=black><span style='color:
black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'> </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>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.</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>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)</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>.</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>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.</span></font><font color=black><span
style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'> </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>The difference with this
stump is:</span></font><font color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>There is a channel from
top to bottom, not made by a drill, but by chain-saw-in-cuts in 60° angles</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'> </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>Picture 001 shows that
by a metal-stick going through the central-hole.</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>Picture 008 shows (with
good will of the viewer) that the asterisk has a central channel, going
through.</span></font><font color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>Pictures 010 and 012
show the different position of the in-cuts from bottom in comparison to the in-cuts
from the top,</span></font><font color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'> </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>-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.</span></font><font color=black><span
style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'> </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>Regards </span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:black'>Martin</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
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