Motor Speed Controler for Power Tools

[Didpoolhall]

speed controler box for all motor AC. i really need this coz i can modification drill and angle grinder for cutting or sanders. Easy for build and very cheap but very usefull
hope this video can give inspired

[DIYer]

Thanks Didpoolhall! We've added your Motor Speed Controller to our Electrical category,
as well as to your builder page: Didpoolhall's Homemade Tools. Your receipt:

Motor Speed Controller by Didpoolhall

tags: motor, controller

[TheElderBrother]

I am terrible with electrical and this could solve a problem for me, but I hope someone can help me sort this out.

I have a 2x72" belt grinder, and it runs on a 1HP motor, with no VFD.

Would this project be more like running the grinder on a dimmer switch, which I have been warned not to do, or like running it with a variable frequency drive?

Many thanks,

G.

[Floradawg]

It looks to me like you would just be reducing the voltage to the tool. If you do that with the tool under load that would be a good way to burn out the motor.