I make the head from an 8x8x14 inch piece of white pine, with the striking faces cut at a 1/24 slope.
I drill a two inch hole in the head, and square one end of the hole, then make a hardwood handle that slides through the round part and has a square end that locks into the square end of the hole...
the handle takes a bit of time to make(I use a hatchet/drawknife), but lasts indefinitely, the head is very quick to make, but breaks now and then.