I was given this grinder a couple christmases ago, havent really ever used it until recently. Craftsman Variable Speed 8 Bench Grinder: Power Up With DealsSears

The variable speed **** doesnt do anything, the the unit appears to run at full speed all the time. It worked the first couple of times I used the unit but hasnt since. Thing maybe has 20 minutes of run time on it.

I took the **** off the shaft and turned the shaft by hand to make sure the **** wasnt just slipping on the shaft and it still feels normal so I am out of ideas short of taking it apart and tinkering with it.

 

VFD is probably bad or the controller in the motor

 

I'm sure it's just a potentiometer that controls the speed... Pick one up from radio shack and wire it in and see!!!

 

I pulled it apart and tested the resistance of the leads of the ****, 10.2kohms at low and 9.8 at high....that doesnt seem quite right.

 

No it doesn't, seems like there should be more of a range than that.

 

Your thread title= oxymoron.

Similar story , I got a nice ( I thought) craftsman timing light for Christmas 3 years ago , needed it this past summer , it didn't work , tried it on another vehicle , no dice . Wayyy too late to take it back . FML

 

it's a craftman. take it to sears and get a new one.

 

thats only for handtools. most power tools have a 1 year warranty and you need a receipt.

 

throw a mini **** fit and sears will cave every time.

 

Buy new one, take old one back and say it doesn't work. You get a new one and no problems.