A trim and molding plant was throwing away a huge stack of 1x5/8" hickory (in ten to sixteen foot lengths). I was able to go through the pile and get a few thousand board feet of fairly straight grain pieces. Of these I then cut 61" and 51" lengths (and 36" lengths for arrows). Of these I then threw out anything that looked too unsafe or had knots I missed. In the end I had a little less than 200 possible staves (and same for arrows).
I made a few prototypes until I got what I wanted, then I made a jig for the table saw. The jig itself is approximately 1/2" at the grip, 1/4" at the nocks; however, I adjusted the position of the stave and jig on the saw to make the bows a bit thicker. I left a 5" grip.
The final dimensions ran about 60" nock to nock, 15/16ths wide, 1/2" at the grips fading to 1/4" at the tips (loose dimensions). These dimensions worked for the 12 and ups.
The final dimensions for the 51" bows were much the same, except that I then threw them all through the saw and reduced the overall width to bring down the poundage. These worked very well for the 9yo kids.
To tiller them all I strung a finished bow to the perfect brace height. Then I set two c-clamps on a bench so that the top of the c (or the side of the c depending on how I set them up) caught the end of the staves at the right brace. This way I could pop a stave in and see immediately if one limb was weaker without having to string each one. I then simply popped the stave out, clamped it and tillered with a spoke shave (for speed). Since the tiller was generally already good due to the jig, this went fairly fast. I also picked out any problem staves this way, and broke a couple over my knee for fun.
Because the little kids get really discouraged if the feathers cut their hands when shooting traditional style, I used a small rasp from lee valley to cut in an arrow rest about a 1 1/4" down on the grip. I would definitely recommend this (and the little rasps from lee valley are amazing!). Most of the older kids did this themselves (after everything else was done).
In then end I had 150.