Judah appeared when it was attached to the machine and working
Since I went out many times, I checked the wheel and found out that there was a brittle place and a hard place
There was a place where it fell quickly, it became only to correct the grinding stone rather than the working time
If there are other cases like this and there are other measures, please let me know from the manufacturer
Eyes were too fine with the grinding stones so far, they could not be sharply grinded, but with this grinding stone we can grind as we thought. On the other hand, the reduction of the grindstone is quick, and it becomes uneven immediately.