for what it's worth, I cut my backers from bow stock....then the backer and the bow core go through a thickness planer. Then the flat surfaces get scraped down with a hacksaw blade (dont have a toothing plane) and glued up. The glue up is "full" size, 1" X 2", then it's shaped down from there after the glue is set up. I use titebond 2, wrapped in plastic wrap and rubber bands.....and let it set for 24 hrs.
I cut the bow cores and backers with a table saw.
rich