Subtract is one of the three boolean movements in Shapr3D. You can access it in Tools > Subtract. Use it to remove bodies, groups from other bodies, groups.
The Subtract flow
1. Tap on Tools > Subtract
2. Select the bodies, groups you want to reduce with other bodies, groups.
3. Tap on Next
4. Select the bodies, groups you want to remove.
5. Tap on Done
With the Subtract tool, you can create organic bodies, just like the helmet above, which looks like this after the finishing touches:
Learn how to build this helmet using the Subtract tool in this video: