How to fillet edges in Sketchup ?

In SketchUp, there isn’t a dedicated “Fillet” tool like in some CAD software, but you can achieve filleted (rounded) edges using a combination of tools and extensions. Here’s how you can do it:

Method 1: Manual Fillet Using the Arc Tool

1. Draw Your Geometry:
   • Create the shape or object whose edges you want to fillet.
2. Select the Edge to Be Filleted:
   • Highlight the edge or corner where the fillet will go.
3. Activate the Arc Tool:
   • Select the Arc Tool from the toolbar or press A.
4. Draw the Fillet:
   • Click at one end of the edge.
   • Click at the other end of the edge.
   • Move the arc outward to define the fillet’s radius.
   • Ensure the arc snaps to the corner for precision.
5. Erase Extra Lines:
   • Use the Eraser Tool to delete the original corner lines, leaving a smooth fillet.

Method 2: Use the Follow Me Tool for 3D Fillets

1. Draw the Path:
   • Define the edges where you want to apply the fillet.
2. Create the Fillet Profile:
   • Use the Arc Tool or Circle Tool to create a small fillet profile.
3. Activate the Follow Me Tool:
   • Select the Follow Me Tool from the toolbar.
   • Click on the profile, then drag it along the desired edge path.

Method 3: Fillet With Extensions

Several SketchUp extensions can simplify the filleting process:

1. Install Extensions:
   • Go to Window > Extension Warehouse or SketchUcation Plugin Store.
   • Search for extensions like:
     • RoundCorner (by Fredo6): A powerful tool for creating fillets and chamfers on 3D objects.

1. FredoScale: Offers additional rounding and scaling options.
2. Install the extension.
3. Use the Extension:
   • Open the extension from the toolbar or menu.
   • Follow its instructions to select edges, set fillet radius, and apply the effect.

Tips for Success:

• Work at Larger Scales:
  • Small fillets can cause SketchUp to create “holes” or fail to merge geometry. Scale up your model temporarily, then scale it back down after filleting.
• Practice Precision:
  • Use guides or dimensions to ensure your fillets have the exact radius you want.
• Save Before Making Changes:
  • Filleting can sometimes produce unexpected results, especially on complex models.

These methods allow you to create clean, rounded edges in SketchUp, enhancing your designs’ aesthetics and functionality.