
If you are interested in a DIY electric grinder, you may want to take a look at this article.
If you use a motor and chuck every time you drill or grind, then this method is very troublesome and unsafe to use, and it makes you feel quite frustrated, so you come up with a sudden idea to build a handheld electric grinder by yourself.

If you happen to have materials such as a battery protection board, a speed control board, a battery level display board, a charging board, and batteries, then you can start preparing and making it.


First, you can design a housing.

Then you print out the housing.


After that, you can assemble those components, and this is what it looks like after assembly is completed.

This is the battery level display when you turn it on.

It is finished, and it is actually very simple. In the future, drilling and grinding will become much more convenient, and it will also be much safer.