I'm afraid Shapeways have recently increased their prices on WSF models. Recent communications with customers suggest the White-Strong-Flexible material is more than suitable, but does need a primer-filler (Auto-shop, 'Duplicolour') paint to smooth out the 'powdery' finish. This is similar to my '02' model but with a larger diameter tank to closer match the newer/bigger prototypes more accurately. Please see the image of new (left) and old (right) trailer CAD models side by side for comparison. The wheels are now 'fixed' to prevent manufacture problems. My thanks to Prof. Bill Guegold for pictures of his trailers. I look forward to seeing them all painted.