I have printed in both PETG and PLA successfully using the following settings: PLA: 188 print temp, infill=30%, 0.12mm layer height, use supports, top/bottom thickness of 1.20mm PETG: 210 print temp, infill=35%, 0.15mm layer height, use supports, top/bottom thickness 1.80mm. I used a larger infill and top/bottom because with PETG thicker is better as PETG is a very stringy/viscous filament. Once the part is finished printing, remove the support as well as the front tab which is included in the design to help prevent the front two points from bowing up during printing. Be sure to sand the surfaces with the support and the front tab smooth. I used a glue stick for adhesion, also using heated bed may help but is not required.