I'm really pleased with my Shapeways part for converting an old Polaroid camera to accept modern film. I printed the part in "white/strong/flexible" and it's strong enough for me to attach other aluminum parts to it. I've taken my camera out shooting and the material holds up really well. If you're curious, you can read how I used the part in my camera, at my blog. Cheers! (This is the part after I spray-painted it black, high-res photo is on my blog...)