The engineering team at MetMo Cube have created an aluminium herringbone-gear fidget toy called Helico, offering the world’s first helical gear fidget toy. Launched via Kickstarter this month ...

If I can print a herringbone gear in PLA or in PAHT-CF and get functionally the same performance, then not only does printing in PLA reduce filament cost, it also means I can avoid the need for a ...