So i have a couple different electric die grinders but only one is adjustable but that only has a 1/8 drive and its bits arent very long so it cant get very deep. The other one spins at 30,000rpm and just blows the rolled up sandpaper bits away pretty quickly. Any suggestions?
Find a speed controller that plugs in between the electrical outlet and the tool. It will allow you to limit the amout of juice going to the tool which will slow it down.
All i can find is speed controllers for fans
I don't shop at Harbor Freight very often, but they have what they call a router speed controller that would work for what you need.
Oh okay cool. Thank you Jangus.
what amp should it be? I have found 10, 15 and 20 amp controllers
How many amps does your grinder pull? Match it.