Solid Shell

Overview

Hollows out a solid, leaving only a shell of the specified thickness. It creates vessels, containers, and architectural forms in one step: turn a sphere into a hollow ball, a cylinder into a pipe, or a box into a room.

• Coordinate system: z-up (x right, y back, z up). Sizes are in units and are converted to pixels by pixels_per_unit during rendering.

Usage tips

• Hollowing alone does not change the exterior; the outside of the shell retains the original shape. To reveal the cavity, carve an opening with solid_subtract or expose a cross-section by intersecting with a box using solid_intersect.
• The go-to vessel recipe is sphere → shell → cut away the upper half with solid_subtract = bowl.
• thickness is in units. At 16px/unit, 0.1 is a wall about 1.6 pixels thick. Walls that are too thin may break during rendering, so a final thickness of at least 2 pixels is safer.

Related nodes

• solid_subtract — carve an opening or cross-section
• solid_intersect — expose a cross-section
• solid_sphere / solid_cylinder / solid_box — source shapes to hollow out
• solid_render — convert it to pixel art

Examples

Create vessels, pipes, and exterior building walls. Combine with carving to expose a cross-section.