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So you have this T/D Recurve, and you want to copy it, but you want a 1 piece.
Can you make your riser the same length and use a power lam. your power lam would be the same thickness as the T/D wedge if you measured it at the END of the T/D riser, mine is about .150 at that intersection,,, (and tapers to .000) and it sticks out 3 1/2" past the T/D riser each side.
SO my riser is 12 3/4" my power lam would be + 3 1/2" each side = 19 3/4"
My power lam would be .150 thick 19 3/4" long with 3 1/2" of taper to .00 each end.
sound good to me