I found this site after searching the web looking for info on power hammers. This looks like a good place to learn. I've been messing with cars since I was 15, not sure if I've learned much since then but I keep trying. I have a pretty well equiped shop, lathe,mill,shear,press brake,mig and tig welders, shrinker/strecher and now a nibbler. I am in awe of some of the talent here, looking forward to picking up some pointers.
John