Burn down the stump
Read the full description before you start.
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1. Dig a trench
Dig a trench as best as you can around the stump that is at
least a year old. Preferably about 10 cm deep. The stump will
burn down as far as the trench is deep.
The trench also acts as a barrier, preventing hot coals from
spreading.
The sides of the Stump Chimney™ don’t get very hot. However,
it gets very hot at the bottom of the trench where the air holes
are located and above the upper opening. Make sure there is
nothing that can ignite above the chimney opening or on the
ground nearby.
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Tips for better combustion
Damp and large stumps can be more difficult to burn.
Drill holes.
Drill a few holes in the stump with a long drill. Drill diagonally
through the entire stump. The hole should start at the top edge
of the stump and end on the opposite side down near the
ground. The heat will rise into the hole and the stump will also
burn from the inside. With more holes, the stump burns up
faster. The best drill is a centre drill or twist drill, which is 400
mm long with a diameter of 16 - 20 mm. The drill can be bought
in a builder's shop and costs from £ 5 or more depending on the
quality.
Sawing with a chainsaw
Saw an X with a chainsaw. With more cuts, the stump will burn
faster.
NB! The tips mentioned above are not mandatory, but they
reduce the number of times one needs to fill with more
briquettes, and it takes less time to burn down the stump.
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2. Place the Stump Chimney™ over the stump,
fill with briquettes and light.
A. Place the Stump Chimney™ over the stump.
If there are roots protruding from the stump, they can either be
cut off or the sides of the Stump Chimney can be adjusted in
height. It is important that the Stump Chimney™ stands firmly
on the ground and does not topple over. The ideal gap between
the stump and the Stump Chimney™ is 1 briquette. If the gap is
too large, many more briquettes are necessary, and less heat is
generated around the stump.
Seal the area where the chimney stands on the ground to
prevent drafts. Use the soil produced when the trench was dug.
The air should preferably enter through the air holes at the
bottom of the chimney. If there is too much draft, the briquettes
will burn too quickly.
B. Fill with briquettes and light - use either a lighter
or lighter fluid.
NB very important! If the folding plates are not unfolded,
the briquettes will end up on top of the folding plates. Then they
won't do any good and the folding plate will be ruined.
With lighter fluid.
1. Fill the gap with briquettes between the sides of the Stump
Chimney and the stump, so that they come up to the edge
of the stump. Make sure the briquettes reach the ground.
Sometimes you have to push the briquettes down if they get
stuck.
2. Pour lighter fluid (preferably environmentally friendly) from
above and light. If lighter fluid is used, minimal smoke will be
produced.
3. Remove the hooks of the folding plates so that the folding
plates can move freely.
With firelighters.
1. Fill in some briquettes in the space between the sides of the
stump chimney and the stump. Make sure the briquettes
reach the ground. Add 1-2 firelighters to each air hole so
that they can be lit from the outside. Add more briquettes so
that they reach the edge of the stump. Sometimes you have
to push the briquettes down if they get stuck.
2. Remove the hooks of the folding plates so that the folding
plates can move freely.
3. Light all firelighters from the outside, through the air holes.
When the briquettes are about to catch fire, they produce
smoke.
NB! SAFETY! NB!
Before lighting a Stump Chimney, make sure there is something
at hand to extinguish the fire in case something unexpected
happens. It can be a fire extinguisher, buckets of water or a
water hose. Also, remove nearby objects that could catch fire.
Examine soil conditions, e.g., if the soil is peat-rich, make sure it
is damp
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