How to make a grinder with your own hands: a master class? with detailed step by step instructions

On a pipe Ø50 mm we measure and mark the length of the engine with a marker. On a pipe Ø40 mm, we measure and mark the length that is convenient for holding a grinder in your hand.

Wrapping a piece of paper around the pipe in the places marked with a marker, we draw lines for cutting.

We cut the blanks with a saw.

We cut out rectangles of 9.5x6 cm and 5.5x5 cm in size from a sheet of plastic. Cut out 2 segments from a Ø75 mm pipe with metal scissors, corresponding to the height of the battery.

Using superglue, we assemble a container for our power source from the obtained blanks.

Cut out and glue the side of the container from cardboard.

Via screwdriver in the upper part of the container we drill a hole for the output of wires.

Solder the wires to the plug.

We collect the plug. We insert the wires into the drilled hole and solder them to the battery.

We insert the battery into the container, and glue the second sidewall.

We cut the end of the plug on a pipe with a diameter of 40 mm. Sand the edges with sandpaper. We pass a plug through it and glue it to the top of the container.

Slightly remove the flange on the inside of the plug with a knife so that the handle Bulgarians entered better.

Part of the structure is ready.

We drill holes of the required diameter in a plastic rectangle and, putting it on the motor shaft, fasten it.

On the reverse side, we put on the cut-to-size part of the pipe on the engine and glue it to the plastic base. The edges of the plastic protruding beyond the pipe are cut and sanded.

We take a blank for the handle and with the help of an emery fixed on a pipe Ø50 mm, we make notches for the handle to fit to the engine housing.

In a place convenient for work, we drill a hole for the switch.

Solder the wires to the button. Let's skip them in drilled hole, and put the button in place.

We solder the power socket to the wires coming out of the bottom of the handle, which we put on the plug.

Having previously removed the reins, we glue the upper part of the handle to the engine body.

Solder the wires to the motor.

Glue a piece of pipe Ø40 mm to the front of the motor housing, corresponding to the length of the motor shaft.

We drill ventilation holes on both sides in the side of the engine housing.

We cut off the socket from the sewer pipe Ø110 mm. Gluing it to a sheet of plastic, cut out the protective cover.

We cut out the desired segment, in the center of which we glue the cut off part of the plug onto the pipe Ø40 mm. In the center, drill a hole of the desired diameter.

We position the protective cover at the desired angle and drill a through inspection hole in the plug and in the pipe, which allows tightening the adapter.

We insert the adapter, with the grinder disc dressed on it and tighten it with the key.