I'm still selling 1/350 scale SSN screws (propellers) on eBay (mulsannemike) for the LA 688 SSN, Ohio SSBN/SSGN, Type 212 SS, Oscar II SSGN, Delta IV SSBN, Resolution SSBN, HMS Trafalgar SSN, Kilo, Sturgeon SSN, Benjamin Franklin SSBN, Permit/Thresher SSN (new), and Skipjack SSN (new). My screws correct observed deficencines in the shape and execution of currently modeled 1/350 scale screws for those models. I'm printing these at home, and selling them on eBay, because I can actually print thinner on the home machine (.3 mm unsupported). And as there isn't high demand, I can keep up with it.
I get a ton of scaling requests recently and I answer every one. Ultimately I can rarely indulge such a request inasmuch as what I'm finding is that large swings in scale, going from a smaller existing scale to a larger scale, the issue is that you fall out of Shapeway's reasonable price box. What happens is it flips a switch in their algorithm and suddenly what is $19 in 1/192 is $260 in 1/72. So small scale moves have a better chance of being economically feasible. But that has its issues too, this one CAD techincal: I draw bespoke to the scale I'm working in. So if I'm working in 1/350, the smallest/finest details will be measured against Shapeway's .3 mm/.6 mm wall thickness minimums. And if I get a request to go smaller in scale, sudenly I'll have areas of the model that aren't compliant with Shapeway's minimums and the model gets rejected. I'm currently learning that lesson with the Portsmouth Sails I scaled down to 1/700. Looks like I might loose all the masts as they won't even accept them at .6 mm diameter (don't ask me, suddenly they're considering those "wires" and that has to have a minimum of .8 mm and they look gooofy that beefy).
I'm always open to suggestions. In fact the back and forth with you guys is pretty inspiring. I can't do everything, and there's the "interest threshold." If I'm not "into it", it probably won't happen. But if I am immediately, it probably will. However, timing is always an issue. So if you've contacted me and I've been interested, just wait (Guppies and Spit rads...yes, still looking to do those).