Electrode fabrication is one of the basic practices for electrochemists. Especially, microelectrodes are generally known as “hand-made” and their often like an art. In this work, we report a new protocol fabricating multi-electrode probes based on recently matured 3D Fused Deposition Modeling (FDM) printing technique. The general concept to print half insulating body in PETG, insert (etched) me...