I stopped by Home Depot on the way from work yesterday to see if they had anything decent to work with and after about 15 minutes of looking I found this very nice quartersawn 1x3x12 Red Oak board. It had very straight grain for about 3/4 of the length so I took it home.
I halved the board and ripped the very straight grained half into 2 1 1/4" boards and the other half into a 1" and a 1 1/2" board. My daughter has been wanting a bow so the 1" was for her a 30# bow.
I got it roughed out on the band saw 55" ttt, 5" handle, parallel limbs to 9" from the tips then straight taper to 1/2" nocks. All was working well the tiller was looking good it was a little stiff from mid limb to the tips but I was working that down and had it starting to bend nicely.
It was pulling 30# at 20" and I was starting to reduce the weight to get it to 25" and that's when it happened. TICK I took it down, unbraced it and ran my hand across the back and felt the little crack. It had a very small knot on the back that I hadn't even noticed.
Well the bow was a failure, but I will get something good from it so I pulled out the heat gun and decided to get some practice on bending the tips. The first one I clamped down on my form and decided to hang a bit of weight to the other end and heat the limb and let the weight slowly bring the bow down to introduce the bend. It apparently was too slow and I ended up over cooking the limb and it formed 3 cracks across the belly in the bend.
The second limb I tried a different approach, I clamped it down and started heating this time applying a little pressure with my hand and low and behold I was able to feel when the bow wanted to bend and started applying a little more pressure and it came down nice and smooth with no overheating or cracks.
I did not get any pictures of the flipped tips but here is where I was at when I heard the dreaded TICK. The little dot at the edge of the limb on the closeup is the knot that failed.