Open Source Filament Diameter Sensor for Recycling, Winding, and Additive Manufacturing Machines

To overcome the challenge of upcycling plastic waste into 3-D printing filament in distributed recycling and additive manufacturing systems, this study designs, builds, tests validates an open source diameter sensor for winding machines. The modular system multi-axis optical control recycled 3-D-printer makes it possible to analyze surface structure processed filament, save history measurements along entire length spool, as well mark defective areas. is developed independent module integrated a recyclebot. was tested on different kinds polymers (ABS, PLA) sources (recycled prints virgin waste) colors including clear plastic. results using camera were compared with manual measurements, obtained one-dimensional digital light caliper. found that sensing method allows users obtain significantly more information comparison basic sensors received data not only accurate but also detailed analysis surface. ensures greater availability plastics technologies community stimulates growth composite materials creation. presented can greatly enhance user possibilities serve starting point complete will regulate motor parameters achieve desired acceptable deviations even extrusion rate printer recover from irregularities.