Bambu Studio and Orca Slicer projects
Bambu Studio and Orca Slicer save their projects as 3MF files, and many models on sharing sites are distributed in that form. These slicers keep a project's plates, filament colours, and object names in their own configuration files inside the package, outside the parts of the file the 3MF specification defines. Solidly reads those files so that a project looks as it does in the slicer.
A file is treated as a project when its package contains Bambu Studio's model settings file. Orca Slicer writes the same files, so its projects are read the same way, and the Info tab's About section names whichever application wrote the file. Projects from other slicers, such as PrusaSlicer, open as ordinary 3MF files.
What is read
Solidly reads each plate and the objects on it, the filaments with their colours, types, and presets, the names of objects and parts, the type of each part, and the printer model and plate type, which the About section shows as Printer and Plate Type. Print settings, such as layer heights, supports, and seams, are not read.
Plates
Each plate is a row in the Objects tree, named Plate 1, Plate 2, and so on, followed by the plate's name when it has one. Its objects are listed beneath it in the slicer's order, and an object on no plate follows the plates as a row of its own. Selecting a plate row frames its objects, and the Node tab shows a Plate card with the plate's number and object count.
The Info tab's Summary adds a Plates row.
Build plates
In Models mode, each plate's objects stand on a drawn build plate, a dark slab in the shape of the printer's bed with a 10 mm grid on its surface. Quick Look draws the build plates as well. While the sidebar shows the Objects tree, the measured grid is drawn instead, and Photo Mode draws neither.
Build Plates in the Render tab's 3MF Display group hides the build plates in Models mode.
The camera frames the objects when the project opens, so an empty plate can start out of view. If any object falls well outside its plate, Solidly draws no build plates and leaves every object where the file places it.
Filaments
The Info tab's Filaments section lists each filament with its number shown on its colour, followed by its type and preset, such as "PLA · Bambu PLA Basic".
Each object is drawn in the colour of its filament wherever the model itself gives no colour. Filament colours are always drawn opaque. In the Materials tab, each filament is a material named after its number and type, such as Filament 1 · PLA, listed before the file's other materials. Like every 3MF material, a filament's card can be adjusted for viewing and is never saved.
The Node tab names an object's filament once, as its material chip.
Names and part types
Objects and parts take the names the project gives them, which are the names the slicer's object list shows.
Some parts in a project shape how an object prints and are not printed themselves: modifiers, negative parts, support blockers, and support enforcers. Their rows are hidden when the project opens and can be shown with the eye button. They are left out of every measurement. The Node tab reports such a part's type in a Part Type row.
Painted colours
Colour painted onto individual triangles in the slicer is not drawn. A painted object is shown in its filament's colour, and the Info tab's Notes section says how many objects carry painted colour.
The assembled view
When a slicer imports a mesh, it records where the mesh stood in the file it came from. Placed at those positions, the parts of a model that was exported in pieces stand where they belong in the complete model, which is what Bambu Studio's Assembly Overview shows.
For a project whose parts assemble this way, the left of the toolbar has a button that switches between the two layouts. Its tooltip reads Show Assembled while the project is on its plates and Show Plates while it is assembled. The button appears in every sidebar mode and is hidden in Photo Mode.
The assembled view has no build plates, and the camera frames the result. When the project places an object more than once, the further copies are hidden, since they would stand inside the first. The selection, the open panels, and any changes made in the Materials tab carry across the switch. The layout is a view setting and is not saved to the file. Quick Look always shows a project on its plates.
The button is offered only for a project in which each printed part of an object records where it came from, there are at least two such parts, and the parts do not mostly overlap one another when placed. A project whose parts were all exported around the same origin would pile up when assembled, so it does not offer the button.
Orientation
While a project is shown on its plates, Edit ▸ Rotate Model and the Info tab's Orientation buttons leave the plates where they are. The objects on each plate turn together about the plate's centre and are set back down on it. An object on no plate turns about its own centre. In the assembled view the model turns as a whole. See Rotating the whole model.