3D Printed Replacement Part Marketplace

[atowler]

I'm looking into starting an online marketplace to connect people who are looking for replacement parts (automotive and otherwise) with people who can design and 3D print parts. Sure, the parts won't be original, but some parts are nearly impossible to find or just make more financial sense to have printed. With modern 3D printable plastics you can print things that will be exposed to ultraviolet radiation from the sun and under hood temperatures, so it wouldn't be limited to just aesthetic components. Here's how I'm thinking it would work:

As a buyer seeking to have a part designed you would set a bounty for how much you are willing to spend. A designer then can accept the bounty, design the part, then send it to you. If a part has already been designed then you only have to pay the fee for having it printed since the design work was already done. I'm still working out the details so it's subject to change. I'm really just trying to get a feel for if this is even something that is wanted before I go about making it. Thanks for your feedback!