What PrusaSlicer workflows need
PrusaSlicer can start from simple geometry, but richer workflows benefit from files that preserve more context.
Resource Guides
Best File Format for PrusaSlicer: STL or 3MF?
Learn when STL is enough for PrusaSlicer and when 3MF is better for color, MMU, and richer project handoff.
Last updated 2026-06-17 / Reviewed by PrintNext Team
Workflow
Step 1
Model geometry
Step 2
Color or material plan
Step 3
3MF export
Step 4
Open in PrusaSlicer
Step 5
Verify MMU or material setup
When STL is enough
STL is enough when the project is simple and you plan to set up printer, materials, supports, and slicing inside PrusaSlicer.
When 3MF is better
3MF is better when you want to preserve color, materials, or project setup before final slicer review.
Recommended PrintNext workflow
Use PrintNext Design for color planning, export 3MF, then verify material mapping and printer setup in PrusaSlicer before printing.
FAQ
Common questions
Should I use STL or 3MF for PrusaSlicer?
Use STL for basic geometry. Use 3MF when the workflow needs color, materials, or project context.
Is 3MF useful for MMU workflows?
It can be, especially when color or material assignments need to survive into slicer verification.
Can I prepare color before PrusaSlicer?
Yes. Prepare color in PrintNext Design, export 3MF, and verify the file in PrusaSlicer.
Do I need to recheck the 3MF?
Yes. Always confirm colors, material assignments, printer profile, and supports before printing.
Continue learning
Related PrintNext guides
These pages connect the same workflow from file format decisions to color planning, inventory, and print cost.
Slicer Workflows
PrusaSlicer Color Painting Guide
Plan PrusaSlicer color workflows with clean geometry, color assignments, MMU checks, 3MF export, and print verification.
Format & Workflow
STL vs 3MF
Compare STL and 3MF for geometry, color, materials, slicer handoff, and multi-color printing workflows.
Format & Workflow
How 3MF Stores Color
Learn how 3MF can preserve color assignments, material data, and project metadata compared with plain STL files.