--a large bolt that is about 1 foot long
--2 nuts that fit onto the bolt, whatever size that may be
--heat gun--optional, I guess
--bench vice--if you use the heat gun
Step 1: Break a handle!
Step 2: Remove the old handle.
Now, the hammer I had, wasn't wood. It was some kind of fiberglass handle and it sure was some nasty stuff. I had to cover my face when I drilled through it because of the dust and I would advise the same if your handle isn't wood.
Step 3: Place and tighten the nuts
Find two wrenches that fit or two adjustable wrenches or whatever.
Tighten! I like to apply a lot of force and I manage to get mine extremely tight and snug. Also, since the head slopes down towards fork end so when I am hammering, the bolt will be forced forward more so it can only get tighter, not looser.
Step 4: Prepare the PVC
Cut your pipe to whatever length you rod is with a hacksaw or coping saw; which is what I used.
The words will need sanding off so get a 60 grit or lower for the job.
Step 5: Glue!
I left it standing upside down for one night and continued work the next day; even though the glue wasn't dry then.
Step 6: Heat and clamp
If you've never heated PVC before, it is fairly easy. You can use a small propane torch, gas oven, or even just a fire but my new heat gun definitely works the best and will not burn before it is softened. If you only have a torch then you must be careful not to burn the PVC. I don't know how well heating it over an oven works; for more info, http://www.instructables.com/member/Thinkenstein/
Once the PVC is softened, it will stay soft and malleable for a few minutes, depending on how hot you got it but it will need to be clamped for at least 2 minutes to cool.