I hand forge a single face, Japanese style hammers - some call it a cutler or dog ear hammer. The eye is placed close to one end. This creates a dropping effect when swung making this type of hammer easy on the arm. I make this style hammer from 1050 medium carbon steel and each hammer weighs approximately 2 pounds.
Medium carbon steel makes for hammers that are not excessively hard which is my preference. For handles, I use a variety of southeast Asian ironwood and I shape the handles to be ergonomic. The weather here in Taiwan is extremely humid and so handles may lose moisture after being shipped to less humid locations, however, I have had very good success with my latest handling technique using oil resistant rubber spacers and a wooden wedge. I feel my hammers are top quality and that hand forging improves the form and function of my hammers.