Isaac Porras his experience working in his father's sheet metal shop taught him manufacturing and design skills, and after college, his experience in the semiconductor industry designing parts for machines provided him the skills to build a new hot knife, needle, and scooper attachment device to attach to a tool he calls the Solderdoodle, intended to remove defects from 3D prints. His latest is now running on Kickstarter. You can read the whole story here: http://3dprint.com/55844/solderdoodle-finishing-tool/


Below is a photo of the cordless tool: