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Vintage Craftsman Block Motor Grinders --

Started by goodfellow, Jan 18, 2025, 01:22 PM

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goodfellow

Remember when these were all the rage a few years ago?

I'm tickled to death about getting one of these. Picked it up on ebay for a song because it was listed as DOA. The venerable "Block Motor" grinder was one of Sears' best power tools ever. Knowing that these things are bullet proof, I bet on the fact that it was a faulty connection and not a bad motor -- it was a good bet.

Turns out it was a bad switch that had fried when a hot wire that was feeding it shorted out. No big deal!!! th-bounce







Previous owner stuffed a very thick buffing pad on the left side and it must have frayed to all get out when he turned it on because the pad threads are caught in everything.



Right side is the OEM 6 inch medium grit wheel and it still rings good when "pinged".





Bypassed the faulty switch and she started right up -- smooth as silk.



Bad switch --



All apart and ready for some "love" --







People always want to know what makes these things so special; here's the reason.
Look at those field windings. That is some VERY thick copper wire. When compared to a modern Chinese winding, these look GIGANTIC. The imports use very thin field wire. This is what makes these "block motors" so darn powerful and long lasting.





Time to go to the store and get some hammered paint.

Somebody hold my beer.....

goodfellow

At lunch I went and purchased some hammered paint -- silver and copper tones. Two hours later I was done.

The frame and cover were a breeze to paint. The brackets and side covers took a little longer, but the parts washer made short work of cleaning.







The switch was also salvageable. I took it apart, cleaned the contacts and put a new stem into it; good as new!!



Done!! only other thing I had to do was rewire the light fixture. A great grinder for next to nothing invested. All I need is to find a left housing cover for it. The seller didn't know what happened to it, since it was an estate sale. No problem, I have time to look for one. Just glad to have the unit working and lookin' good again.









The water tray was blasted and painted -- ready for another 40 years of service.



For a couple hours work in the warm sunshine, this was a lot of fun and -- worth it!

Somebody hold my beer.....

skfarmer

i have done about a half dozen grinder restores. they are fun projects, not that difficult and usually turn out great.
from the ashes shall rise a phoenix.

Uncle Buck

Always rewarding bringing machines/equipment and tools back from the dead.

Well done GF!
Better hold onto something boys cause i'm fixin ta stand on it!