Here we report how a modified open-source 3D printer can successfully MEW process nylon-12 with no observable thermal degradation. The modification to the original MEWron printer includes a highquality heated cylindrical collector available at an approximate cost of $500 and allows for the incorporation of variable tube sizes. Modified FFF printed components and a rotatory mechanism driven by a stepper motor enable a cylindrical collector with a rotation precision of 0.2 μm. The cylindrical collector has an indirect heating system that offers a simple approach to achieve MEW with high temperature polymers such as described here.