DIY Plastic Injection Molding
3D Printing is relatively slow. And while the quality of 3D printed parts from entry level machines is acceptable for prototypes, it’s not up to par with most professional consumer level products.
Check out this video on a Hobbyist DIY Plastic Injection Molding System from LNS Technologies that was recently featured on Kickstarter. Make and perfect a prototype part or invention with a 3D printer, then produce it in medium quantities with a setup like this. Awesome!