RepRap
Friends decided to dip their toe into the 3D printing revolution by putting together a RepRap open source (both hardware and software) device. Being hardware technicians, they became a little lost when the software didn’t behave as expected. I helped out in my spare time making modifications to both the Arduino firmware on the actual RepRap printer device and the driver software on linux. After a few months of experimentation and debugging of both hardware and software issues, they are now reliably printing many objects. Soon they will print all the parts needed to build another printer so I can join in the fun.