Stack Packer

Lays parts flat, stacks them in towers with a thin interface layer in a second material, and nests the towers on the bed. Exports a multi-material 3MF for PrusaSlicer.

Printer

Preset

Bed X / Y / Z (mm)

Edge margin (mm)

Parts

Drop STL files, a folder, or a print-list CSV here, or click to choose

Materials (extruders)

Track & other parts

Diffuser skins (translucent)

Interface between stacked parts

Stacking

Layer height (mm)

Interface thickness (layers)

Max stack height (mm)

Keep stacks as short as possible

Flip parts for better contact (face-to-face, back-to-back)

Stack only identical parts

Min contact to stack (%)

Nesting

Accuracy

Gap between stacks (mm)

Rotation steps

Slicer notes (PrusaSlicer)

Open the 3MF. It comes in as one object with one part per extruder (track, skins, interface), already assigned. Don't split it, re-orient it, or arrange it.
Slice with the same layer height you set here, and the same first-layer height. Every interface is lined up to that grid.
Interface material should be one that doesn't bond to the parts, for example PETG between PLA parts (or the other way round). Give it 100% infill so it prints as a solid sheet.
Keep the wipe tower on. Every interface is a tool change.
If a stack shows low contact, turn on supports with Support on build plate only off.
Add a 5–8 mm outer brim for tall stacks with small footprints.

Cut360

Packing…