How to 3d print from Sketchup

Here’s a step-by-step guide on how to 3D print from SketchUp, including tips to ensure your model is ready for printing.

1. Set Up Your Model for 3D Printing

• Set to Metric Units: First, set your model to use metric units (millimeters) if your printer works in those units.
  • Go to Window > Model Info > Units.
• Ensure Solid Geometry: To print correctly, your model must be a “solid” with no open edges, holes, or stray lines.
  • Pro Tip: Use the Solid Inspector extension (in SketchUp Pro) or the Solid Inspector² plugin to identify and fix any errors in the model.

2. Install the STL Exporter Extension

• In SketchUp, STL is the preferred file format for 3D printing, as it’s compatible with most slicers and printers.
• To install the STL Exporter:
  1. Go to Extensions > Extension Warehouse.
  2. Search for “SketchUp STL” and click to install.
  3. Once installed, you’ll see a File > Export STL option.

3. Check Model Integrity

• Ensure Watertightness: The model needs to be “watertight,” meaning no open edges or gaps. This is essential for the slicer to understand the boundaries of the model.
• Verify Scale and Wall Thickness: Ensure the model’s features are thick enough to print properly. Thin walls might not print if they’re below your printer’s minimum resolution.

4. Export Your Model as an STL File

• Once your model is ready:
  • Go to File > Export STL.
  • In the Export dialog box:
    • Choose your units (typically millimeters).
    • Set the file type as Binary for compatibility.
  • Click Export.

5. Import the STL File into a Slicer Program

• Open your STL file in a slicer software (e.g., Ultimaker Cura, PrusaSlicer, or other software compatible with your printer).
• In the slicer:
  • Adjust Print Settings: Set layer height, infill density, and supports as needed.
  • Preview: Most slicers provide a layer-by-layer preview to confirm the print will look as expected.

6. Send the File to Your 3D Printer

• After slicing, the software will export a G-code file compatible with your 3D printer.
• Transfer the G-code file to your printer (via USB, SD card, or direct connection) and start the print.

Tips for Successful 3D Prints from SketchUp

• Use Simple Shapes: SketchUp is great for simpler shapes. Avoid overly complex geometry, as it can cause errors in the print.
• Run a Test Print: If you’re new to 3D printing from SketchUp, run a small test print first to ensure your model is set up correctly.
• Optimize Model Complexity: Remove any unnecessary details that won’t show up in the final print to reduce processing time.

With these steps, you should be able to go from SketchUp design to 3D-printed object!