If you use SketchUp, you know that the "sharp edges" look can get old very fast. Real furniture, architectural moldings, and gadgets almost always have some degree of beveling or rounding.
Creating these rounded edges manually—drawing arcs, extruding, and erasing faces—can be tedious and time-consuming. That’s where the Round Corner Extension comes in.
In this guide, we will cover what this plugin does, why it is essential for your workflow, and how you can download it for free.
Before you download the plugin, you need to ensure you have the infrastructure to run it. Because Round Corner is an advanced plugin, it requires LibFredo6 (a library of common functions used by FredO6’s plugins).
Step 1: Download Requirements
Step 2: Installation via Extension Manager
.rbz file for LibFredo6 first.Many users seeking a "free download" end up on Russian or cracked software forums. We strongly advise against this.
.rbz files (Ruby scripts). Hackers can embed malware that steals your designs or monitors keystrokes.Some users might look for a direct download link. However, for most SketchUp extensions, including the Round Corner extension, it's recommended to install them directly through the Extension Warehouse to ensure they are properly linked to your SketchUp installation and to get updates easily.
Fredo6 distributes Round Corner as freeware but retains copyright. You are encouraged to donate via Sketchucation if you use it professionally. Redistributing the extension for a fee or repackaging it without credit violates the license terms. Round Corner Extension Sketchup Free Download
If you want the Round Corner Extension for absolutely zero cost without pirating, here is your step-by-step guide to the legitimate free version.
Step 1: Create a SketchUcation Account Go to SketchUcation.com and register for a free account. This is the official distribution hub for Fredo6.
Step 2: Install the LibFredo6 Before Round Corner works, you must install Fredo6's shared library (LibFredo6). This is always free. Search for "LibFredo6" in the SketchUcation Plugin Store.
Step 3: Download Round Corner (Free version) The Ultimate Guide to the Round Corner Extension
Step 4: Manual Installation
Window > Extension Manager.Install Extension..rbz file.The Limitation: The free version will only let you round corners with a maximum of 3 facets. This gives you a "chamfered" look, not a smooth radius. For 90% of architectural blocking, this is fine. For rendering close-ups, it is not.
Open SketchUp: First, ensure you have SketchUp installed on your computer. The process might slightly vary depending on whether you're using the web-based version or the desktop application.
Access the Extension Warehouse:
Extensions > Extension Warehouse.Extensions > Extension Warehouse if available.Search for Round Corner Extension:
Select and Install: