DIY Mini Electric Grinder: Electric Toothbrush Hack

If you are interested in DIY mini electric grinders, you might want to take a look at this article.

If you happen to have a low-end electric toothbrush that doesn’t work very well, it would be a pity to throw it away. At this moment, you may suddenly come up with the idea of disassembling the electric toothbrush and converting it into a mini electric grinder.

First, you disassemble the electric toothbrush.

At the bottom, there is a plug cap with a raised structure that fits into the groove of the toothbrush body. You can remove the bottom plug by rotating it about 25 degrees.

From another angle, you can see that there is a rubber sealing ring on the plug cap for waterproofing.

There is also a waterproof sealing ring between the charging socket and the plastic plug cap.

The control circuit board includes the charging circuit.

The vibration motor can be replaced with a long-shaft ordinary motor, as their shape and size match perfectly.

The collet that matches the new motor shaft.

You modify the electric toothbrush housing by cutting off the part where the brush head is installed.

You drill a hole at the base of the cut section so that the long shaft of the new motor can pass through.

The following are the components you need to assemble.

Then you start the assembly process.

The tail section remains almost undamaged.

You can test the result, and it works quite well.

Collets with different apertures.

From another angle.

Finished.