I will be starting on a white ash board bow this weekend. 66 inches long, 1 and 3/8 wide to just past mid limb and tapered from there to 3/4 inch tips, slightly working handle. I am shooting for a bow of about 45 pounds at my 27 inch draw length, and I also plan to back it with rawhide. With these dimensions and fairly light poundage, will it be necessary to heat treat it? Just looking for as much advice I can get before I start removing wood. Thanks!