VOLUME

Stackable climbing volumes: design and build multi-level features

Stackable climbing volumes layer a second (or third) shell on a larger base so setters get terraces, roofs, and dramatic silhouettes without welding steel. They are still plywood frustums — but the top volume must seat cleanly on the lower one, and your sheet layout must account for every panel.

What “stackable” means

A base volume provides a platform; a smaller volume nests on that platform with an inset so the upper shell does not slide. In VOLUME you control stack inset while editing stackable forms, then preview the combined 3D shape before cutting.

When stacks help routesetting

  • Home walls that need height change without rebuilding the frame
  • Competition-style features with multiple lip heights
  • Gyms that remount modules in different combinations

Keep stacks removable if you want flexibility — mounting screws should be accessible.

Design tips

  1. Start with a stable, wider base; aggressive upper slopes are easier when the base is trustworthy.
  2. Match wall thickness across levels unless you intentionally mix materials.
  3. Plan T-nuts on every climbable face — upper volumes need their own pattern (T-nut guide).
  4. Check total height against mat clearance and climber fall zones.

Cutting and nesting

Stacks multiply panel count. Use nest exports so all faces fit your plywood sheet with sensible waste. Hand builders should label pieces by level (base vs upper) from the cut list so assembly order stays obvious. See dimensions & cut lists and hand-cut vs CNC.

Assembly order

  1. Build and finish the base volume; install its T-nuts and mounting holes.
  2. Dry-fit the upper volume on the inset seat.
  3. Fasten the upper shell per your design (screws into the base platform — pilots required).
  4. Mount the combined feature to the wall through the base mounting pattern.

FAQ

Can I design stackables without CAD?

Yes. Use stackable controls in VOLUME — same parametric approach as single volumes (design without CAD).

Are stacked volumes only for gyms?

No. Small two-level features work well on home bouldering walls if height and mats allow.

Start from a single volume build if you are new: how to make a climbing volume, then add a stack in the designer.