Chainsaw Repair

I think Silvey or someone was trying to make a square grinding rig like the add on to the Stihl USG grinder. It's pretty interesting and it looks like the second angle is set incorrectly. It should true the OD of the stone to 5-10 deg instead of the back of the stone.

Like Philbert said, I made a new arbor to use 7/8 grinder wheels but stones for the 300's are still available through Madsens.