After email discussions, DiStefano may adjustments I suggested and then printed the catapult. The detailing and refinements were much better than what I had previously ordered thru Shapeways. Recognizing the capabilities and limits of 3d printing, I will need to make some refinements by replacing 3d printed cabling with fine braided brass wire to represent wire cables for the catapult launch trolley. Other than that a very nice piece of 3d printing.
Despite the online catalog images the actual product is amazing!
The Bofors gun is now in place on my old model MTB. It looks brilliant. Excellent service thanks