Hello,
I had a limb template laser cut from stainless steel, cost me about 60 Euros.
Used CorelDraw to design it at actual size, the "Cutter" could even use the cdr-format.
For a one-of-a-kind thing the question is if it pays. Another option were to have the form itself cut with a cnc-router (I had this done once for about 130 Euros), you'd get a true, right-angle form and won't have any further work to do save gluing mica or glass to the surface and varnishing. On mine, I had even holes for dowels (for rubber bands) and clamps drilled.
Just a suggestion
Markus