1. Base

Load the scan and set up the base shape of the helmet.

Control	What it does
Scans → 3D → Edit	Load or switch the 3D scan the helmet is built from.
Production method	Choose Milling: Brace or 3D Printing: Brace.
Remove Cast	Offset the surface inward (mm) to remove the thickness of a cast layer. Use a negative number to offset outward.

Position the head

Position the head correctly before you continue. When you click Front view, you should be looking at the front of the face. In Top view, centre the head on the crosshair. This keeps the left and right sides even, so mirroring holes works as expected.

tip

You cannot continue without a base shape. Load the 3D scan first, then set Remove Cast if a cast layer needs offsetting.