Jack,
When or if you have to bore out a grinding wheel I strongly suggest you put some thick paper (similar to the center blotter) under the wheel and under those clamps. If you don't you risk cracking the wheel. I hope you give that grinding wheel a ring test before mounting it on the grinder, then let it run for at least one minute at full speed before using it.
When or if you have to bore out a grinding wheel I strongly suggest you put some thick paper (similar to the center blotter) under the wheel and under those clamps. If you don't you risk cracking the wheel. I hope you give that grinding wheel a ring test before mounting it on the grinder, then let it run for at least one minute at full speed before using it.