[ArduinoNmore] took an interesting approach to designing a counter intended to accurately display how many meters of filament a 3D printer has used. The Filamentmeter looks a little bit like a 3D ...

So he took a Hornet 3D printer and designed a lot of 3D parts ... Suppose you want to print a 2 meter-long sword and the actual conveyer belt surface was 25 centimeters square.