when i was 11 i got shot in my right arm with a 12 ga shotgun.the blast obliterated my elbow to the extent that i cannot completely extend my right arm or twist my right wrist.i am 21 now and have been smithing for a year now,i always liked workin with steel and i took vocational traning to become a welder,my hammer hand is still my right arm,my trick is to let the hammer start fallin then add some force mid swing like a wip effect. works pretty good but takes a little more practise on timeing and hammer control but saves my right arm from hurtin in the long run