My Tool Grinder.

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The used cup wheels that I have are missing labels but if I had to buy new ones I would source Carborundum Gold Type 11 (Flaring cup). They look similar but mine are smaller (worn out). I also have some cup wheels made in Germany but there seems to be no standard for the centre hole. I'll probably look for wheels with the same diameter hole when it comes time to replace the ones in use as I turned a custom mandrel to hold the cup wheel and fit the motor shaft.

I expect my old cup wheels to last a long time if I only use them for sharpening end mills. That's another reason that my prototype grinder is not being made into a production duty set up.
 

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