Printed on UM2 EX. PLA, .8mm Nozzle, .15mm layer height, .8mm shell thickness, .6mm bottom/top thickness/ 15% fill, 20 spd, support everywhere and with a Brim platform adhesion. These pics are of the helmet RAW. removal of the support structures and them just taped them together for a quick picture. Helmet was not scaled larger and my head (Size 7.5 US) won't fit. I recommend scaling larger. Very nice print, I will scuff, prime and paint these and put lights for the eyes using LEDs.