Ironman Helmet - Mark 3 - Day 1 Since one of the pieces in the earlier Mark 85 helmet did not fit, I will be printing Mark 3. I already have one of the pieces done! Still needs sanding, but thanks to [%4872360898]settings, that I am once again using, it shouldn’t be too bad! Plus, not only does the Mark 85 helmet not fit together, Mark 3 just looks so much cooler…