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Removal - by grinding
A stump grinder or stump cutter removes tree stumps by means of a rotating cutting disk that chips away the wood. Stump grinders can be the size of a lawn mower or as large as a truck. Most accomplish their task by means of a high-speed disk with teeth that grind the stump and roots into small chips.
A typical stump grinder incorporates a cutter wheel with fixed carbide teeth.
The cutter wheel movements are controlled by hydraulic cylinders to push the cutter wheel teeth laterally through the stump and to raise and lower the cutter wheel.

Warning. There are several articles on the Internet suggesting that stumps can be removed by burning them.
Do not follow their advice and instructions.
It is outright dangerous and any fuel or oil spills can contaminate the land for years.

Stump removal. Stump grinder. Chemical stump remover

Tree Stump Removal
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Stump removal. Stump grinder. Chemical stump remover
Why you should consider NOT to cut down a tree.
Trees are good for the environment as they are natural filters to clean up the air we breathe. They improve the landscape and provide shade and stabilize the soil. Having one or more deciduous trees on your property as well as a row of evergreens can save on heating and cooling costs for your home, click here for more information. Trees are long-lived so please reconsider cutting a tree. Remember, trees are slow growing and cannot be replaced in your lifetime.
When you have no choice.
The tree will have to be cut down if it is sick, has been severely damaged by a windstorm or has outgrown its space and can cause damage to nearby property.
After a tree has been cut and felled, the stump is usually a small remaining portion of the trunk with the roots still in the ground. Tree stumps can be very difficult to remove from the ground. The most common method of stump removal is by grinding and sometimes by using chemicals.

Removal - by chemicals
A common method for stump removal is to use one of the many chemical stump removal products, so long as immediate results are not needed. These stump removers are mostly made of potassium nitrate (KNO3) and act by rapidly increasing the decay of the stump. After an average of 4-6 weeks, the stump will be rotten through and easily fragmented in manageable pieces, see picture lower left. Please be careful using stump removal chemicals. It not only kills the stump but also almost everything else nearby, NEVER dump leftovers onto the soil. A Government of Ontario website says: "Chemical stump treatment is particularly useful in preventing the vigorous regrowth that is the characteristic response of many deciduous species after cutting. Moreover killing the stump is the first step towards encouraging it to rot. Most treatments must be applied to freshly cut stumps to achieve maximum effectiveness. For old stumps, it is best to drill several holes or to split stump with a wedge before applying the treatments. Spray regrowth from an old stump along with the stump. Various dye materials may be added to the oil based sprays to assure that all exposed surfaces of the stumps are treated."


Stump grinding machine

Close-up view of stump grinding wheel
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