Custom 3D printers can also be made that don't self-replicate
Are you interested in learning how 3D printing works? If so stay tuned as this site will be dedicated to 3D printing and all that is involved with manufacturing. This includes information about machines, electronics, software/firmware. From the awe inspiring 3D print that you can hold in your hand to the smallest detail that makes a 3D printer work, such as the plastic injector that melts the plastic from 1.75mm diameter to .4mm diameter.
- Page 1.1 (Plastic Injector)
More available soon.