Come on RD -- stop picking on us poor non union workers --LOL. I mean, there are plenty of us out here who have blisters. I for one, have many from all the repairs I have done on my American union built cars (particularly my chevy and jeep). What is the largest union in America? The teachers-- I imagine they have a lot of calluses from the hard labor they do over the summers:)
By the way, I have done a fair amount of mechanic work in my life. While going to college, I dug post holes in silt-clay soil for 8 hours a number of weekends. Try that sometime. After that the same day, we castrated over 30 pigs, docked sheep, drenched sheep and dewormed them. This was after putting in a full 8 hour day. So I have done the hard work.