I strongly reinforce the comment about eye protection.

I was 17 and working under my '63 drilling out cross member rivots so I could relocate the cross member with the rear transmission mount to change from the Power Glide to the TH400. No eye protection.

The doctor ended up taking 11 pieces of metal out of my right eye. They left the 12th piece in because it had already sealed over. It eventually dissolved, but I have had trouble with that eye ever since.

Eye protection is cheap insurance.