Stack Packer
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.
Packing and previewing are free, with no account. Pay once when you want to download plates.
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
- Drop in STL files, a folder, or a print-list CSV.
- Choose your printer and which extruder each material uses.
- Click Pack for your quantities, or Fill the build volume to pack as many as fit.
- Download the 3MF (the paid step), open it in PrusaSlicer, and slice at the same layer height.
Pricing
- Free: packing, nesting, Fill the build volume, print-list import and the 3D preview, as much as you like
- Paid: downloading plates as multi-material 3MF or STL, with no limits
- Sign in on any computer with the email you paid with
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