I've never known just what it is but stamping caps gets to my back, even with the vise on the work bench. And it you do this many it can really hurt. With interruptions it took almost all morning.
Let me take you for a ride in my pickup
I tell my employees how lucky they are to work with me. Most people load up and drive three hours, wait in line for an hour to get through the front gate, pay an exorbitant amount of money, then walk a mile to stand in line for an hour to experience 3 to 30 seconds of pure bone-rattling terror, then go get back in line for an hour to do it again at Worlds of Fun in Kansas City, MO.
They not only get the same experience for free as I drive the pickup offroad, they get to do it over and over, AND they are getting paid to do it. The pure bone-rattling terror increases in intensity when I'm driving across the client's property in tall grass and other ground-obscuring terrain.
I can surely sympathize, standing in one place sure gets to me also. I think it is called "getting older".
Try a tall stool or get one of those big elastic back braces - it seems to help.
Let me take you for a ride in my pickup
In 59 I made a quick trip down Read and Holly Mountain, a piece of the Blue Mountains named by early settlers, in my 42 Chevrolet pickup. Sideways on the curves, really more of a fast drift method of decent. Had a class mate with me, when he was able to escape his words were, never riding with you again. At the Class 50 year reunion I asked him if he remembered that ride, he did. When I reminded him of his statement about riding with me again, I finished with the fact that he never did, said I had gone into the Navy was the reason, got me to wondering, but I passed up on asking him if he needed a ride.
jud
> Try a tall stool or get one of those big elastic back braces - it seems to help.
Get a rubber mat to stand on. It's standing on the hard floor that kills the back.
Made a holder out of pipe with a flat disk on the bottom, about waist high, use it to hold the caps while stamping. Have used a vise and anvil in the shop, the vise works well and there is a bench top to hold the stamps, have to bend over for the anvil but it produces the sharpest stampings.
jud
I think I've tried just about everything; it's one of those things-maybe reaching for the stencil or the heavy sledge I use (never bothered me to pound in the bar).
I don't know, but in the garage with the vise and a chair, or in the field with caps in the post driver it takes about ten caps and the back is moaning. Good thing is it's always temporary...so far anyway, already feeling better.
And it's not from getting older, used to hurt 30 years ago also;-)