Is it possible for a 15 year old to build a 3D printer without plans, and without a kit? I didn’t think so either. My son Braden did just that. He ordered the components from Ebay, built his own pedestal, and figured it out. I wish I could tell you that I helped him, but that would be a lie. Check it out, its pretty cool.
Here is the printer producing a different part:
Here is Braden’s howto instructions that he posted on Instructables: