I think you'll need to resort to 3D printing.
BTW, my tests show that the Wollensak lenses on Bolseys are about the worst lenses I've ever met. Blurry and chromatic aberration when away from the center. Yes, they are only Triplets, but the German Cassar and (especially) Apotar clearly out-perform them. I remember that a Retina Xenon at f/4 was sharper than a Bolsey at any aperture. On the plus side, Bolseys are far sharper than Dianas, 4x6 prints look fine, they're cute, and you can get 40 shots on a roll.
Mark Overton