It does have one pit about .1125" in size that was below what we wanted to grind off but what you are seeing is smear marks from the oil that gets moved around with the base of tools. The crappy dust from acetylene is my last thing I really want to deal with. I have removed all abrasives from the shop into a dirt room but that dust is annoying. I have an overhead hood that needs to be installed and ducted out but who has the time??
-Drew
Bookmarks