ARF Trooper Trooper Helmet This purchase includes the STL files ONLY. The helmet itself must be printed on a 3D printer using these files. Refunds cannot be processed if the file has been downloaded. Scaling will be necessary to size this helmet to your head circumference. The table below shows what scale to print at for each head circumference for this particular helmet: Head Circumference (Inches) Print scaling (%) 20 83.33 21 87.50 22 91.67 23 95.83 24 100.00 25 104.17 26 108.33
