[u407]’s 3D printed Signspinner was created as a clean/dirty indicator for a dishwasher, and at its heart is a mechanism that works a lot like that of a retractable ballpoint pen. Every click of ...

Trump is known for his signature writing tool - the Sharpie pen. In fact, his thick and highly legible Sharpie scrawl has caused problems for the president in the past - giving away notes to his ...