Do it yourself or find a friend with a router. Make a square slightly radiused sanding block about five inches long,screw on a pc. Of used sanding belt, put 1/4 inch face plate on one side to follow form and keep block square and touch
up your form and add glass, aluminum or formica.
Make spreaders or buy from binghams and use air hose. You will be fine.
This ain't rocket science and we are not going to the moon. The bow will likely shoot.
Its the craftsmanship that kills us cobblers..
Lou