Heres my two cents worth. I have only built a couple of bows, repaired several, fixed hundreds of gunstocks over the years. Last year a friend had a boo backed bow, had a similar crack/split ont the outside edge,ran back at an angle for 3/4 inch, both cracked edges starting to raise up. I took brownells acraglass bedding compound, mixed thin with some ground up fiberglass floc, dye to match the boo. I took a piece of aluminum, waxed with past car wax to act as a release agent. Then i carefully with a dental pick, lifted up the boo fibers at the crack and got plenty of acraglass under and into the crack, let the boo back down, put the aluminum on top and put a c clamp on overnight. Next day removed clamp and aluminum, sanded down any execss and touched up boo with tru-oil. Bow is still shooting fine, on a daily basis. This Acraglass is 10 times stonger than steel weld, per weight, I dont see much on here about using it, but it is strong,and adaptable to about any woodworking repair. Hope this helps. Sam.