Additionally, two transversal cavities are present, to accommodate ceramic sleeves with a wall thickness of 1.55 mm. These sleeves provide electrical isolation to protect the electronics. Finally, a 0.1 mm brass nozzle was installed and connected to the high voltage supply. More detailed information about the components is collected in Table . The cylindrical collector was designed to integrate with the MEWron 3D printer and to be compatible with variable diameters (1 -6 mm) (Figure ). For this study, a cylindrical collector of 2.5 mm diameter was used. A collet and milling chuck were implemented on the side of the printer to hold the collector horizontal to the flat collector plane while FFF components were printed as a mechanical support.