(3 of 6) Box Modeling for PV3D - Pt2 3DSMax

[Burletonboy]

the easiest way is to ad a shell mod

[orgicus]

You can right click the name of the viewport and select Configure.

Tick Force 2 Sided in the Render Options.

This way you don't need to assign a new material set to 2Sided.

Cheers