I found this angle grind from a Japan recycle shop. It no longer works, I think it was abandoned in Japan. In this video, convert it from AC100v to DC 18V, the power is weaker than the original power, but it cuts well.

DC motor 895 price $6
Original coil wire is 0.8 mm
New coil wire is 1 mm

Bosch & Makita Battery Adapter $5 from China

I hope you find this video useful and enjoy it!
I am happy to receive feedback, suggestions to improve myself.
!!! I'm sorry for the mistake if I did in this video !!!
** I still keep some parts, I want to help the world environment **
Thank you very much for your likes, comments, and subscription!
Have a nice day
Gear Show