I had a friend that did the same thing and I got a groove between my head and ear. I was laying on the ground with hands covering my head.
Maybe that explains a lot LOL
MTC
You need to have a oil coalescing filter to keep the oil getting too your equipment. The compressor you have is not a oil less model. Also I would add another moisture filter in line also.
Clean dry air is required for these type of air tools.
Good luck, hope this helps
Edit. Some oil in the...
You might also get the Ray Cover scorper sharping template from Lindsay engraving company , it provides a relief cut on the bottom of the graver to help reduce the drag works great MTC.