Stump Chimney™ –
This is how it works
Stump Chimney™. After 1 hour of work, the stump is gone. You can remove a stump yourself in a simple safe way by burning the stump. The Stump Chimney™ is both smart and easy to use. You just need few tools to do the job. With the Stump Chimney™ you can safely and in an environmentally friendly way burn your stumps after you’ve cut down the trees. A more affordable and simple option than renting a stump grinder
What is needed
- Stump Chimney™
- Briquette 1 – 3 bags
- Lighter fluid and lighter
Sometimes you need
- Axe if there are a lot of roots
- Drilling machine
- Drill – 400 mm long with a diameter of 16 – 20 mm.
Step 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.
Tips for better combustion
Damp and large stumps can be more difficult to burn.
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 SEK 50 or more depending on the quality.
Step 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 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.
Step 3 – Let the fire burn for 1.5 – 2 hours
As the briquettes burn up, the patented folding plates will fold in towards the stump, bringing pre-heated air towards the stump, therefore improving combustion.
If the stump is low, the upper folding plates will not lean against the stump. In this case they act as a barrier to keep the heat close to the stump.
Step 4 – The briquettes have burned up
The briquettes burn up after 1.5 to 2 hours.
For small dry stumps, there is no need to add more briquettes, but in most cases another round of briquettes is needed.
1. Fold and lock the folding plates in upright positions. See how in the part “Assembly” of these instructions. Wear gloves and use a stick as the folding plates can be hot.
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.
2. Fill up with the same amount of briquettes as the first time. Make sure the briquettes reach as far down as possible. The briquettes will catch fire from the residual heat around the stump.
3. Remove the hooks so that the folding plates can move freely
Step 5 – Let the fire burn
Once the coal has burned up, the stump will not burn with an open flame but will burn (smoulder) slowly inside the chimney.
This will take a few hours depending on the size of the stump.
Step 6 – When the stump has burned up
Once the stump has burned up, simply lift off the Stump Chimney™.
Step 7 – Extinguish the remaining embers and fill in with soil
In some cases, the remaining parts of the stump are still smouldering. This can be difficult to see or feel. Always extinguish it with plenty of water. Use at least two 10 l buckets, preferably more.
Now it’s just a matter of filling the pit where the stump used to be with soil and sowing in new grass or planting something else.
Buy your Stump chimney for only £ 89
Remove the stumps yourself. Watch the instructional video
See more videos and pictures of how to remove stumps yourself
See more examples of how different stumps have been removed. Clear step-by-step descriptions with video and pictures. There are examples of small or large stumps and whether the stump has shallow roots or whether the roots reach far down into the earth.
See how different types of stumps have been removed