Here's an example of what I was talking about regarding mass... these two bows are almost identical. Maple backed jatoba, 70" ntn, 1 1/8" at the center, tapering to 3/8" nocks, 48#@28", final mass 620 grams. This bow: maple/ipe/osgae tri lam, 70" ntn, 1 1/8" at the center tapering to 3/8" nocks, 53#@28", final mass 610 grams. So, even though this bow has 3 layers, it's mass is nearly identical with the same profile. Both bows took basically no set (1/2" each). If I had to overdraw one of them, it would be the tri lam.