Quote Originally Posted by ntenny View Post
You know what would be *really* cool? A 3-D printer that could work in optical-quality glass. I'm gonna go code myself up a Noctilux! In Contax mount!

...OK, I suppose that's a little ways off still. But I can think of lots of things that should be easy enough to print up in plastics with reasonable levels of precision: film holders, lensboards, mounting flanges, adapters. They won't have the durability of metal, nor the precision of professional machine-shop products, but in many settings that would be fine; certainly better than having a camera go into forced retirement because of an irreplaceable part.

-NT
There are no irreplaceable parts, just irreplaceable craftsmanship.

Some parts would be extremely impractical/expensive to replace by fabrication, like the circuitry in a Canon A-1, but as long as you are talking metal parts, just about anything can be fabricated if you are willing to pay.

The trouble with 3-D printers is they don't use appropriate materials, and do not hold close tolerances. Yet.