SketchUp Round Corner Plugin Free Download — Round Corner 2.6a

If you're like me, you love smooth edges and clean models. The Round Corner plugin for SketchUp is one of those essential tools that can turn your sharp edges into beautiful curves with just a few clicks.

Today, I'll share everything about the Round Corner 2.6a plugin — the last free version released on 27 Nov 2013 — and why it still works great with newer SketchUp versions. Plus, I'll point you to the safe free download, installation tips, and some personal tricks I use.

Example of Rounded Corners Using the Plugin
Example of Rounded Corners Using the Plugin

What Is the Round Corner Plugin?

Developed by Fredo6, the Round Corner plugin helps you add smooth, rounded edges to your SketchUp models without manually creating curves or arcs. It saves tons of time and makes your models look professional.

  • Round All Edges: Automatically rounds all edges in a selected model or group.
  • Round Selected Edges: Choose specific edges to round off for more control.
  • Adjustable Radius: Set the radius of your rounded corners for precise modeling.
  • Compatible: Works on both Windows and Mac versions of SketchUp.

SketchUp Round Corner Plugin Toolbar
SketchUp Round Corner Plugin Toolbar
Is Round Corner Plugin Free?

The Round Corner 2.6a version is the last free release and still widely used today. Newer versions of Fredo6’s plugins might be paid or have trials, but this free version fits perfectly for those who want reliable rounding without paying.

Where Can You Download Round Corner 2.6a?

I recommend downloading from trusted sources only to avoid malware or fake files. Here’s a safe link to download the Round Corner 2.6a plugin:

Download Round Corner 2.6a Plugin (27 Nov 2013)

Installation Instructions

Installing the Round Corner plugin is straightforward:

  • Unzip the downloaded file.
  • Copy the Fredo6_RoundCorner.rb file and the Fredo6_RoundCorner folder into your SketchUp Plugins directory.
  • Restart SketchUp.
  • Find the Round Corner toolbar under Tools > Fredo6 Collection > Round Corner.

How to Use the Round Corner Plugin

Using it is simple:

  1. Select your edges or entire model.
  2. Open the Round Corner toolbar.
  3. Pick “Round All Edges” or “Round Selected Edges.”
  4. Adjust the radius slider to get the perfect curve.
  5. Apply and enjoy smooth edges instantly.


Is It Safe to Use Crack or License Keys?

I’ve seen many searches for “Round Corner plugin free download with crack” or “Round Corner license key.” Honestly, I don't recommend cracked versions — they risk malware, instability, and legal issues. The free 2.6a version works perfectly for most uses without any crack.

Alternatives to Round Corner Plugin

If you want something different or newer, here are some alternatives to consider:

  • Fredo Corner — A similar plugin by the same developer with extended features.
  • Bezier Curve Tools — Useful for custom curves beyond just rounding corners.
  • Native SketchUp Tools — With patience, you can manually create arcs and smooth edges.

Why I Prefer Using Round Corner 2.6a

After years of SketchUp modeling, I still rely on the Round Corner 2.6a plugin for quick, reliable rounding. It’s lightweight, compatible, and doesn’t demand subscriptions or paid licenses.

Final Thoughts

Whether you’re a beginner or advanced user, the Round Corner plugin is a must-have tool in your SketchUp arsenal. Grab the free 2.6a version, try it yourself, and let me know in the comments how it helped your modeling! 

Leave a comment below with questions or tips!

SketchUp Round Corner Plugin Free Download — Round Corner 2.6a SketchUp Round Corner Plugin Free Download — Round Corner 2.6a Reviewed by Moh.G on July 10, 2025 Rating: 5

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