Po' Boy's Blanchard Grinder

[chevy3755]

could you tell me about your arbor that you made ?

[tonyfoale]

I tried a similar setup for grinding with a CBN wheel. The grinding material was on an aluminium cupped wheel. That was a bad idea, even a small amount of heating would cause the aluminium to expand increasing the DOC which would cause more heating eventually jamming the wheel. Once the heating cycle started it was over in one or two seconds. A normal solid grit cupped wheel would be much more tolerant.