Dear Abe,
I currently have 2 Busch Pressman D 45 cameras, one in rough condition but still takes good photos, the other is only used in studio type setting, I shoot mostly Ilford fp4 and hp5.
The lens boards that I use are Copal 0 and Copal 1.
The lensboards seem to be an Achilles heel for the Busch, as they are small, mine look like someone took a bottle of scotch and metal grinder out to the shed to make the holes 1-2 mm larger.
Additionally there was a chap on eBay who would sell boards, but not available when you needed it and some sort of special handshake to actually purchase.
Your 3D printed boards would be welcomed with open arms provided the cost is reasonable...
Appreciate it, I can give feedback and testimonial as I have been shooting large format since 1985.
Vincent Scott
HArlequin Studio
2112 West University Drive
Unit #214
Edinburg, Texas. 78539
Regards!