Summary Helmet Mark one I recommend you print at a resolution of 1 or 2 microns with full support, just download it and ready, I hope you like it, subscribe to my you tube channel so you can see more things printed in 3D. https://youtu.be/oSX_XwyzTOU Instructions print of 1-2 microns with full support, I recommend leaving the model such as this to get a better result.