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Export formats (3MF · STL · STEP)

At the Export step you decide which file format your model leaves the app in. There are three — each meant for a different purpose. You always download a ZIP archive in which the parts are kept separate by type (outer walls, roof, windows …).

Overview

Format For what Where you choose it
3MF Printing on a Bambu Lab printer — with ready-made print settings included Print target "Bambu Lab printer"
STL Printing on any other printer / in your own slicer Print target "Manual bed size"
STEP Further editing in a CAD program Add-on — comes automatically once unlocked

3MF and STL are mutually exclusive (you pick one print target). STEP — provided it's unlocked for your account — is added automatically on top.

3MF — for Bambu Lab printers

Choose the print target "Bambu Lab printer" and you get 3MF with print settings: one .3mf file per part type, each a complete Bambu Studio print project. Open it and wall thickness, infill, supports and so on are already set — you can slice right away.

  • All plates of one type in a single file. If a type needs more than one build plate, all plates sit as a multi-plate in the same 3MF.
  • Multi-color. Parts with two colors (e.g. a base plate, or a roof with a contrasting top layer) come as a true multi-color object with exactly one filament change.
  • Printer choice. You pick the matching Bambu Lab profile (bed size, exclusion zones) in the export step — see Printers.

Bambu Lab only

The embedded print settings are tailored to Bambu Studio. For other printers, use STL.

STL — for every other slicer

Choose the print target "Manual bed size", enter your own bed size in millimeters, and you get grouped STL. STL is a plain, printer-neutral mesh format that every slicer opens — you bring your own print settings.

  • One STL per type. All parts of a type are arranged to fit your bed and placed into one STL. If a type doesn't fit on a single plate, it's split across several files (_Platte_01.stl, _Platte_02.stl …).
  • Optionally every part on its own. Tick "Also include every part individually as STL" and each single part is additionally included as its own STL in the einzeln/ subfolder.

STEP — CAD format

STEP is a CAD exchange format for programs like Fusion, FreeCAD or SolidWorks — not a print format. If STEP is unlocked for your account, PrintHaus drops the STEP files automatically into the export ZIP — there's no separate toggle for it:

  • One assembly file — the whole house in its real position.
  • One parts overview — every part laid out flat, side by side.

Both are scaled to your chosen scale.

Paid add-on

STEP is an add-on that has to be unlocked for your account. Without it, the export simply contains no STEP files in the ZIP (with no error message).

In every export ZIP

Whatever the format, the ZIP also contains:

  • model.json — your complete configuration. Via "Load project" you can fully restore your house from it at any time (colors included).
  • eingaben.md — your settings as a readable list.
  • A view of your model as an image.

Scale decides the contents

At very small scales (from 1:100 on) each floor and the roof are exported as one solid body, with windows and doors only as cut-outs. See Scale for how this fits together.