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Apr 25, 2022
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How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

In order to remove excess and dry branches from trees with a manual pruner, you need a ladder or stepladder, as well as a lot of time and physical strength. Taking another working gearbox from an old grinder, you can make a mechanized pruner-brush cutter, which will save time, effort and ensure the safety of work, since you do not have to climb trees or climb a ladder.

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

It will take

Materials:

  • round metal rod with external thread;
  • face hexagonal head with connecting square;
  • metal strip;
  • gearbox from an old angle grinder;
  • plastic pipe;
  • regular nut;
  • cutting metal disc.

Instruments: vice, hacksaw, file, hammer, measuring and marking tools, grinder, drill, gas burner, round smooth rod, metal worm clamp, etc.

The process of transforming a grinder into a mechanized tree pruner

We cut off a piece 130 cm long with a hacksaw for metal from a round steel rod with an external thread.

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

At one end, with a hand file for metal, we form a small section of a square section, corresponding in size and shape to the connecting square of the end head.

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

We cut off three fragments from a metal plate in which we drill holes and fold in the middle in the form of rectangular brackets.

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

We form a hexagon at the end of the input shaft of the angle grinder, corresponding to the hexagon of the end head.

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

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How to make a high-rise brush cutter from a grinder gearbox and a screwdriver
How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

We heat the end of the plastic pipe until softened and put it on the corbel of the drill body. Having retreated the calculated distance from the pipe socket, we drill a hole in its wall, under which we substitute a nut from the inside, temporarily glued to the end of the metal rod. Holding the nut with the rod coaxially with the hole, we screw the side handle of the angle grinder into it from the outside of the pipe.

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver
How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

We insert a threaded rod with an end head into the pipe from the socket side. We clamp its end into the drill chuck. We put the socket on the annular belt of the drill body and tighten it with a worm clamp.

We start the end of the input shaft into the hexagon of the end head from the open side of the pipe and fix the gearbox housing of the grinder on the socket of the plastic pipe, using the brackets previously prepared from the metal plate.

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

We fix a cutting metal disk on the output shaft of the grinder gearbox. We turn on the drill and make sure that the disk rotates, and it is ready to work on removing knots and branches from trees, standing on the ground.

How to make a high-rise brush cutter from a grinder gearbox and a screwdriver
How to make a high-rise brush cutter from a grinder gearbox and a screwdriver

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