Prusa MultiMaterial Tension Gauge

thingiverse

A handy gauge makes setting tension on Prusa i3 MK2 MM extruders a breeze. Those tiny screws can be tricky to reach with calipers, but this gauge has got you covered - it features five precise settings: 4, 4.25, 4.5, 4.75 and 5mm. With these easy-to-use settings, dialing in the perfect tension is a snap. To really fine-tune your layer height, try using Slic3r's variable layer height option between 4.2 and 4.8mm - it'll give you accuracy to within .05mm. And if you're in a rush, printing the whole gauge at .2mm resolution still yields excellent results.