Cutting out the riser on a bandsaw,
a sharp blade really helps.
I start with a wood block
Size: 1 1/2"W X 1 3/4"H X 18"L
The riser shape, must be feather thin at the fadeouts (thin tips of the riser block) and a nice smooth taper from the grip section to the fadeouts.
The butcher paper works great in keeping the work surface clean. Before starting the glue up process, lay the laminations out in the order they will be in the limbs. The glass has blue masking tape applied to it's smooth surface to keep excess glue off the surface. Once you have all the parts layed out, I put them into the bow oven to warm. I've found the epoxy flows much easier in all the nooks and cranies of a warm lamination.
While the parts are warming in the bow oven, mix up your epoxy. Then cover the bow form with clear kitchen wrap. This keeps your bow from being permanently glued to the bow form. (That would make the bow VERY hard to pull!!)