I hand stamp. It can be, um, hit or miss. Actually I get pretty good results with it. I measure carefully. Then I make a template out of stacked pieces of tape so the stamp falls into position. I lay the blade on my anvil with a piece of duct tape between the blade and anvil face. This helps protect the finish on the blade as well as keeping the blade from sliding around or shifting on the anvil. When the stamp is in position I use an 8 pound sledge hammer with the handle cut down to make a careful but heavy strike on the stamp. I concentrate on holding the stamp as flat as possible so I get the most even impression I can. I have tried a hydraulic press but it didn't work well for me. This is probably because the 20 ton rating on my Harbor Freight shop press is optimistic at best.