How to Make a Motor Saw

The main purpose of a mini-drill is to drill printed circuit boards, plastic, wood and some other non-solid materials. Compactness and efficiency allowed this tool to become one of the main assistants for the home master. And it’s not at all necessary to buy a ready-made tool. a homemade mini drill does its job no worse than its factory counterpart.

What can be done

You can make a mini drill with your own hands using engines from various tools at hand.

  1. Hair dryer. This option is most preferable, since the motor power from the hairdryer will be quite enough so that the mini-drill can perform its main functions. The maximum speed of such an engine reaches 1500-1800 rpm.
    How to Make a Motor Saw
  2. Record player. Since the motor power of the recorder is very small, the only thing that can come out of such an undertaking is a drill for printed circuit boards. The engine is powered by 6 Volts, which means that you have to find the appropriate charger or battery.

How to Make a Motor Saw

Device manufacturing algorithm

The collection takes place in 3 stages. Let us consider each of them in more detail.

Making a mini cartridge

In order to assemble a mini chuck for a drill, you must purchase a collet. a special mechanism designed to clamp cylindrical objects. Next, you need to connect the motor to the contacts of the future battery, which will power the device during operation.

How to Make a Motor Saw

Video: How to Make a Motor Saw


If your drill rotates in the wrong direction. swap the location of the wire contacts.

Finding the right size drill is easy. Insert the drill into the collet body and tightly clamp it. Next, the finished nozzle must be installed on the motor housing. The collet should fit tightly onto the engine shaft. Otherwise, you cannot avoid vibration. The cartridge for a homemade mini drill is ready.

How to Make a Motor Saw

Case preparation

As a case for a future device, you can use both an antiperspirant container and a regular hollow tube of a suitable size. If you use simple hollow tube, it is necessary to cut the bottom and insert a rubber or other plug in its place. If you are making an apparatus from antiperspirant body, a hole must be drilled in the cover for the drill to exit.

How to Make a Motor Saw

Connect the elements

On the reverse side, you must install the engine. If your motor does not fit in size. pick up another tube. Landing must occur very tightly to avoid vibration during shaft rotation. After that, just tighten the bolts on the collet and connect the resulting device to the mains.

How to Make a Motor Saw

One of the main drawbacks of assembling a do-it-yourself drill from a motor is less power, in comparison with a standard apparatus, and low drill strength.

If a cutter is needed for your work, you can easily do it yourself from an old lighter. To do this, remove the twisting drum from the lighter and slide it onto a suitable-sized bolt. Fix this with a nut and insert into the collet hole. The surface milling cutter is ready!

How to Make a Motor Saw

If for some reason cartridge does not fit to the cylindrical shaft of the motor or coil, it is necessary to degrease it well and then put it on hot glue. This will help to get a stable and solid construction.

Such a mini drill with acquired nozzles can perform minor repairs of technical equipment, drilling plastic, thin metal and making crafts.

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