The results of the scan Katsuya imported into a 3D program and began processing. As said, the scan was accurate enough, so he was able to tackle this task right away and start creating a CAD model with reverse engineering.
Based on a large number of points, the 3D program has already roughly drawn a 3D model, which Kasuya only had to adjust in detail. Due to wear and tear, the shield notch has lost its original form, so knowledge of shapes and foresight is also required. With a few tweaks, Katsuyu was able to accurately recreate the shield notch with reverse engineering. Only 3D printing of the CAD model is required now.