Yup I'm still using a spoon as my hammer when I re-pin a blade... it's getting old and my wife is getting peeved at the slight flattening on a couple spoons... oops!
I'm looking at some hammers on http://japanwoodworker.com/product.a...&dept_id=12902 I really like this bugger but is it about the right weight? I'll be polishing up the face if it's not already.
Jewlers hammers are light weight but I don't know what that is just off hand.