The Think Ink Pen is designed for people who fidget. It flexes with spring-like resistance, has a magnetic ball for sliding, and a spinner for your thumb to roll around. Think Ink was fully funded ...

Creating BIC pens is an intricate process that starts with high-quality materials carefully selected for durability and precision. The pen’s body is molded, and then the ink, made using a blend of ...

There are some workarounds to this problem, but not many of them are as smooth an effortless as this one which uses erasable pen ink to add colors to the filament on the fly. Erasable pen ink is a ...