I’m with Arvin, aka Selfbowman. I wood trim the ends enough to see what the rings look like, mark how you want to try to split, and reseal the ends. I like 67” ttt , or 66” ntn flat bows. 1-1/2” to 1-3/4” wide at the fades tapering to 3/8” to 1/2” tips. Produces a durable, good shooting bow at about any draw weight. Once split, bark and sapwood removed, and the back sealed, set aside to dry. When you get ready to make a bow, get the limb thickness thinned to 5/8” to 3/4”, and dry heat will take out the bend in the end.