Home Cloud Slicer (OrcaSlicer Engine)

Cloud Slicer (OrcaSlicer Engine)

Using the WebAssembly slicer

By Jeremy Smith

• 4 articles

How the SoLoPrint Cloud Slicer uses OrcaSlicer natively in the browser

Serverless Slicing The most revolutionary feature of SoLoPrint is the integrated Cloud Slicer. Instead of maintaining disparate software installations across laptops and workstations, we ported the world-class OrcaSlicer engine (C++) to WebAssembly using Emscripten. What this means When you click the Slicer tab in SoLoPrint, a full-fledged OrcaSlicer environment boots entirely inside your web browser. We did not build a compromised, simplified slider interface. You inherit all standard parameter tweaks, tree supports, variable layer heights, and kinematics calculations identical to the desktop version. The actual geometry slicing computations occur on our cloud servers using powerful multi-threaded instances (for SoLoPrint Pro users) or inside your browser tab (for Free users).

Last updated on Mar 31, 2026

Automatically inheriting printer constraints (bed size, nozzle) into the slicer

Intelligent Integration Because SoLoPrint connects deeply with your physical hardware via the Bridge connector, the Slicer fundamentally understands the machine it's talking to. Auto-Inheritance In standard desktop slicers, you must manually select the 'Printer Profile' (e.g., Ender 3 V2) before slicing. In SoLoPrint: 1. Open the Slicer. 2. In the right-hand parameter tray, click the Target Printer dropdown. 3. Select your live machine (e.g., Garage Prusa MK4). The slicer instantly resizes the virtual build volume grids, blocks out any keepout zones, and retrieves the currently active nozzle diameter (e.g., 0.4mm or 0.6mm) to adapt the layer height guardrails instantly.

Last updated on Mar 31, 2026

Fine-tuning layer heights, supports, and infill profiles in the cloud

Total Control While SoLoPrint makes standard slicing a one-click affair, advanced users require total control over the generated G-Code. Parameter Tiers The cloud slicer offers nested property panels mimicking advanced desktop apps: - Quality: Tweak initial layer heights, variable layer interpolation, and seam alignment logic. - Strength: Adjust wall perimeters, solid top/bottom layers, and select dynamic infill patterns. - Support: Enable organic (tree) supports, adjust overhang angles, and define exact Z-distance offsets. Any customized profile parameter adjustments you make can be saved as a Cloud Preset, making it instantly accessible if you log in from a tablet or a different computer later.

Last updated on Mar 31, 2026

Dispatching sliced G-Code directly from the cloud to the Printer Queue

Cutting the SD Card umbilical Once your model is sliced and you have verified the layer-by-layer G-Code toolpath generated in the 3D viewport, you are ready to execute. The Dispatch Button You will see a prominent Send to Queue button. 1. The cloud securely compresses the G-Code block. 2. The package is sent down the encrypted WebRTC WebSocket tunnel directly through your local SoLoPrint Bridge. 3. The Bridge pipes the G-Code file onto OctoPrint's internal filesystem (or Klipper's virtual SD folder) in seconds. Instant Execution If the target printer is Idle and has correct filament parameters, you can select Slice and Print Immediately to bypass the queue system entirely. Watch the nozzle heat up live on your camera feed!

Last updated on Mar 31, 2026