From Blender viewport to printable slab

This sequence was captured from a live Blender 5.2 Flatpak GUI through hive-blender 0.1.1. The add-on spoke over the local Blender MCP socket. The run used the base catalog and a CodeGate with explicit confirmation for execute_code; it did not call optional provider services. Start with the tool setup.

Build and inspect

1. blender with {"command":"call","id":"get_scene_info","params":{}} inspected the scene. The measured response in the later export run reported 102 objects.
2. Confirmed execute_code calls cleared the scene and built 91 beveled hexagonal slab meshes in six rings. A get_viewport_screenshot call wrote stage 1.
3. Confirmed execute_code assigned amber material to the slabs and made a dark ground. get_viewport_screenshot wrote stage 2.
4. Confirmed execute_code added seven thin Flower-of-Life rings and a central solar hexagon. get_viewport_screenshot wrote stage 3.
5. Confirmed execute_code added an orthographic camera and area light and selected material-preview shading. get_viewport_screenshot wrote stage 4.
6. export_scene wrote a GLB during the staged run. A separately confirmed execute_code selected only the slabs and ran Blender's STL exporter. get_viewport_screenshot wrote stage 5. The later scaled export produced the 130 mm slab STL.

Geometry	Material	Rings	Camera	Export stage

The staged run's driver and its transport notes are in dev/live. In that run, one screenshot request timed out after dispatch; the screenshot file arrived later. It was not replayed. A timeout after dispatch does not prove that Blender skipped the operation.

Scale at the source

The built-in export_scene covers GLB and FBX, not STL. For the printable file, an authorized execute_code used Blender's STL exporter with selected objects and applied modifiers:

bpy.ops.wm.stl_export(filepath=".../hive-geometry-slab-130mm.stl",
                      export_selected_objects=True,
                      apply_modifiers=True,
                      global_scale=10.0)

The default-scale slab exported at about 13 mm. Applying global_scale=10.0 at export yielded about 130 mm. The selected set had 91 slabs. The STL here is 729 KB. CodeGate confirmation controls access to execute_code; it does not sandbox Python. Inspect and approve code before sending it.

The craft pipeline

This slab shows a concrete Blender-to-Bambu handoff. hive-blender produced the scaled STL; hive-bambu's Flatpak CLI slicer used BambuStudio 2.8.2.61 with X1 Carbon 0.4 nozzle, 0.20mm Standard, and Bambu PLA Basic profiles. The measured slice took 15.1 s wall time and produced a 3.14 MB .gcode.3mf. It estimated 9822 s (2 h 44 min) printing and 19.4 m of filament. Slicing is not printing: hive-bambu refuses a print unless its configured :print-gate permits it.

PhotoCraft and VectorCraft are the art side of the same cross-craft showcase: PhotoCraft staged the "hive geometry" artwork through its control port, and VectorCraft drew a golden-comb composition through its control channel. They are separate artwork runs, not steps that generated this STL. The Blender mesh feeds the Bambu slicer; the artwork shows the visual exploration around it.