Corexy

Operation & Slicer

00. Obtaining a slicer

There are many slicers freely available for download, but Rat Rig recommends using one of the following three, as they are widely adopted and have large, active communities:

PrusaSlicer (recommended: free and open-source, available here.
SuperSlicer: free and open-source, available directly from its GitHub repository
OrcaSlicer: free and open-source, available directly from its GitHub repository

A slicer converts 3D models (STL, OBJ, 3MF) into G-code instructions for your 3D printer.

For the V-Core 4.0, Rat Rig now provides official and regularly updated profiles for PrusaSlicer, ensuring a more consistent and reliable starting point. These profiles are designed to get you printing quickly and with high quality. While they are not fully tuned to extract the absolute maximum performance from your printer, they provide a solid foundation to build upon.

You can also check our latest YouTube walkthrough video, where we explain the newest Rat Rig updates for PrusaSlicer with the V-Core 4.0.

01. Slicer Configuration

  • Simply select the appropriate V-Core 4 profile for your machine variant and size.
    1.1. In PrusaSlicer, the V-Core 4 profiles are located under “Other Vendors” > “RatRig”.
    1.2. In SuperSlicer and OrcaSlicer, the profiles are listed directly under “RatRig”.
  • You can also add filament profiles. Rat Rig includes pre-tuned PunkFil profiles! Even if you are using other filament brands, we recommend using these profiles for the same material types. Many parameters, such as cooling, extrusion multiplier, and pressure advance, are already optimized. While they may not perform identically with different brands, they provide a solid starting point for fine-tuning.

02. Add your machine (Optional)

You can connect your machine directly to the slicer, allowing for a smoother workflow by sending the print job directly from the slicer software.
  • Select your machine and click on the gear next to it.
  • Click "add physical printer".
  • Define a machine name.
  • Select "Klipper (via moonraker)" and insert your machine url, created during the RatOS configuration.
  • Click "Test" to ensure your machine is connected to the Slicer, you should see a "Sucess!" window, otherwise check if your machine is connected to the same wifi network as your computer.
  • Click "OK".

03. Downloading a Test Model

After completing this guide, there is still one more step ahead: How to Slice. Once you’ve gone through it, you’ll be ready to run your first test print.
For testing, you can choose between the Punkfil Mascot, our fun benchmark model, or the Rat Rig Cube Calibration Model, which is designed for functional evaluation and dimensional accuracy, or simply any test model of your preference.

04. how to slice

Rat Rig provides predefined slicer profiles for all V-Core 4 models, delivering optimal results in most scenarios. However, due to the inherent variability of 3D printing, parts with complex geometries may still require fine-tuning of slicer settings to achieve the best possible print quality.
  • Open PrusaSlicer and import the selected STL file by dragging it into the slicer (1).
  • Next, select the print settings (2), which define parameters such as part strength, surface finish, resolution, and other relevant factors.
  • Choose the filament type (3), which sets material-specific parameters such as printing temperature and cooling power.
  • Select the machine size, variant, and nozzle size (4). Finally, click "Slice Now" (5) to generate the print file.
  • After slicing, the slicer will generate a layer-by-layer preview of the printed part. You can use the vertical toggle (6) to inspect each layer individually.
    This feature helps identify potential geometric constraints that may require adjustments to the print settings. Drag the layer preview slider up and down to review the sliced layers. While this step is not mandatory, it is a useful practice as you become more familiar with slicer configuration. Once satisfied, click Export G-code (7) to generate the print file, then upload it to Mainsail to begin printing.
At this stage, no further tuning is required! You should already achieve very good results. Additional adjustments may be needed later to meet specific goals, but unnecessary changes beyond what’s covered here can actually worsen print quality instead of improving it.

Previous

03. Calibration