we built these for scouts and they turned out pretty well, i was very impressed.
Step 1: Tools and materials
what you need:
common sense (this is NOT optional)
vice holder thing (you make this)
optional but highly suggested:
glove (your hand is the arrow rest and if your shooting arrows with feather flechings, it can be painful.
Step 2: How its made
this is basically a 4 step process, flatten the PVC, bend the PVC, and curve the PVC
Step 3: The "vice holder thing"
its just 2 boards pined to a larger board just wide enough to fit the PVC and another board.
Step 4: Get started, it may take a while
start heating the PVC, this may take a while but don't be discouraged, keep going ON BOTH SIDES its hot enough when it behaves like spaghetti OK not actually like spaghetti but it gets soft enough to bend in ways it shouldn't DO NOT hold the gun in one place for too long this will burn the PVC and greatly weaken it.
Step 5: Step on it!
or sit or stand or kneel or whatever, just take the 2x4 and sandwich the pipe.
heat about an inch above the 2 handle marks, then let it fall and pinch where the handle goes. USE GLOVES
Step 7: Curve the top
use a pot to curve the top part of the bows
Step 8: Notch it
using a hack saw, cut notches going toward the center.
Step 9: String it
just use para-cord if one side bends mere than the other heat it up making try to return to its original form, don't go all the way just enough to equal it out.
Step 10: Done!
now you have a PVC bow, not as good as the other 2 in the picture below but just as acurtate if you practice! also you may notice the other re-curve has a yellow string, i didn't have one for that length so i just made one with bright yellow para-cord
i highly suggest ether finding a way to use an arrow rest or wearing a glove when firing