Just thinking off the wall here......
I'm considering setting up a 3D printing service through the forum solely for TalkingTGauge forum members who want to print T (and probably Z) models.
I'd print in PLA which is rigid and not at all brittle, and needs no cleaning for painting, etc. There'd need to be a unique set of design rules to work to, as there's dimensional restrictions in FFF printing. Material costs would be negligable...my Baby Deltic loco shell uses 0.82 grammes of plastic, which costs me 3p, I'd need to work out an hourly rate for setting up and printing....and incorporate postage & packing. But I'll be far, far cheaper than other service providers.
Any thoughts or opinions on this idea????