How to make a 12 V electric jigsaw from scrap materials

An electric jigsaw is a multifunctional tool designed for shaped and unidirectional cutting of various sheet materials. It is used when performing repair and construction work, as well as for making DIY crafts. If necessary, such a tool can be assembled independently using available materials.
How to make a 12 V electric jigsaw from scrap materials

A homemade invention will have the functions of a factory analogue and low-voltage power supply, while assembly will cost much less than buying a new electric jigsaw. Our homemade product will be adapted to standard saw blades, which will eliminate problems with finding consumables to complete the work.
Let's start with the parts that will be needed for assembly.

Materials used


The supporting plane and body elements are easiest to make from wood. This material is easily accessible, durable and easy to process. For assembly, you should prepare boards of the following dimensions (length*width*thickness, mm):
  • 190*95*14 – 1 piece;
  • 115*35*14 – 2 pcs.;
  • 130*35*14 – 1 piece;
  • 60*30*14 – 1 pc.

As a drive we use a compact DC motor with a power of 150 W, operating from a network with a voltage of 12 V. The diameter of the output shaft is 5 mm. For the drive, you must additionally purchase a support and a speed controller.
You should also prepare the following materials for assembly:
  • Ball bearing in a support with a hole diameter of 8 mm – 2 pcs.;
  • Straight round steel rod 50 mm long and 8 mm in diameter;
  • To transmit torque, you will need a flange coupling and two gears - 15 and 35 teeth, with seat diameters of 5 and 8 mm, respectively.
  • Metal strip with holes (length – 35 mm);
  • Square steel rod and two flat washers with external teeth.
  • Saw blade.

How to make a 12 V electric jigsaw from scrap materials

Jigsaw assembly procedure


We put the coupling on the steel rod and fix it with a hexagon.
How to make a 12 V electric jigsaw from scrap materials

Next comes the bearings in the supports and a large gear.
How to make a 12 V electric jigsaw from scrap materials

We put and fix the small gear on the motor shaft.
How to make a 12 V electric jigsaw from scrap materials

We assemble the housing, transmission and secure the engine with a support. We use wood screws as connecting elements - with a large thread pitch.
How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

We make a fastening element for a saw blade from a square steel rod. To do this, you need to make two longitudinal cuts and drill holes on the side, as shown in the photo.
How to make a 12 V electric jigsaw from scrap materials

We make holes in the saw blade.
We connect the coupling and fasteners for the canvas using a metal strip.
How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

We manufacture and fasten the last element of the body.
How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

We attach the speed controller to silicone.
How to make a 12 V electric jigsaw from scrap materials

We connect the wires and add a connector for connecting a power supply or transformer.
How to make a 12 V electric jigsaw from scrap materials

The electric jigsaw is ready.
How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

It cuts perfectly.
How to make a 12 V electric jigsaw from scrap materials

How to make a 12 V electric jigsaw from scrap materials

Conclusion


The power of the device allows you to work with docks up to 15 mm thick.To connect to a household network, you will need to purchase a step-down transformer or power supply.
During assembly, scrap materials were used - if necessary, you can modernize the design.

Watch the video


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Comments (1)
  1. vit-vlad
    #1 vit-vlad Guests 23 April 2020 19:46
    1
    we buy a jigsaw and cut it)))), and it will be cheaper than this “vegetable garden”