I decided to modify an hammer in the japanese style forging hammer.
I had an old 1500gr. (3.3 lbs) cross-peen hammer already modified by its former owner. I cut off the peen with the angle grinder and the jacksaw. the ugly cut has been grinded flat. the face has been also fattened and beveled with files and all the hammer, head and handle, has been sanded to 120 grit, I also glued up a crack in the handle and paint it with a couple of coats of wood primer. now it weights 1150gr. (2.53lbs) handle included and... I'm definitely pleased of my new forging hammer.