3D printed body parts? Anyone tried?

I work in the plastic resin distribution arena. Although we do not cater to the 3D printer world, they are getting better at what they are capable of. Most of it does depend on the equipment size and how big the working surface is. Plus, the larger the machine, the higher the cost. Also, the plastics they use are getting better. One place I worked had a 3D printer and used what was deemed "digital ABS", since it had properties similar to ABS, but it was not ABS. In addition, I am not aware of any of these materials having UV inhibitors in them, like a lot of the plastics in modern cars do. If you paint the parts, it will add protection to the base plastic.

I also worked at a place that bought a 3D metal printer shortly after I left to start my current job. Again, they are limited to plate size, but are printing molds for small parts - single and multiple cavity. The finish is rough and they run them all through a CNC to true up and smooth critical surfaces. They are able to harden the printed steel to around an S7 hardness. They are able to print one half of a mold in 2-3 days, including water lines and ejector pin holes, where a fully machined mold would take 2-4 weeks, depending on complexity. In addition, even with the added final machining step, they are able to build a mold for less than half of what they were paying a mold shop and can have it pretty much complete in a week.