Fill the whole build volume with flat parts.

Stack Packer lays your parts flat, stacks them into towers with a peel-away interface layer in a second material, and nests the towers tightly on the bed. You get one multi-material 3MF, ready for PrusaSlicer.

What it does

Stacks with clean contact

Every part lies on its biggest flat face. Matching parts flip face-to-face and back-to-back, so each one sits fully on the part below it. That includes asymmetric curves.

Separates with a second material

Between parts it builds a thin interface shaped exactly like the bottom of the part above, on its own extruder. Pick a material that won't bond, and the parts lift straight off.

Nests by the real outline

Towers are placed by their actual footprint, not their bounding box, and turned in 45° steps, so long parts fit diagonally. It keeps stacks as short as it can.

Uses the right extruder for each part

Track goes on extruder 1, the interface on extruder 2, and translucent diffuser skins on extruder 3. Every part can be changed.

Imports Duality print lists

Import the planner's print-list CSV, point it at your STL folder, and it loads every file at the right quantity.

Stays on your computer

Your STLs are never uploaded. Everything runs in your browser, and you download a 3MF with every part already assigned to its extruder.

How it works

  1. Drop in STL files, a folder, or a print-list CSV.
  2. Choose your printer and which extruder each material uses.
  3. Click Pack for your quantities, or Fill the build volume to pack as many as fit.
  4. Download the 3MF, open it in PrusaSlicer, and slice at the same layer height.

Pricing

$45one-time
  • Full Stack Packer, with no part limits
  • Multi-material 3MF and STL export
  • Print-list import and Fill the build volume
  • Sign in on any computer with the email you paid with
Buy now, $45

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