Curviloft Plugin Sketchup 2015 66 Patched 〈HD · FHD〉

Curviloft plugin

I believe you're asking about the for SketchUp 2015 (possibly with a reference to "66" meaning a 64-bit version or a specific build).

Tips and Variations

Advantages:

Step 4: Activation

• Click on the Rectangle tool (or press 'R' on your keyboard).
• Draw a rectangle with a size of approximately 10" x 2" (you can use any units you prefer).