Sketchup Round Corner [2021] Crack Top Jun 2026

If the model is strictly for 3D printing or rendering (not for structural editing), a minor top crack is often harmless. Use Solid Inspector (by ThomThom) – if the crack is a hairline and doesn't create a hole, the object remains a "solid group" and prints fine.

You've designed a near-perfect 3D model in SketchUp. The dimensions are spot on, the proportions are graceful, and you're ready to add the final polish. You select the Round Corner plugin, dial in the perfect fillet radius, and click "Apply." Then it happens: in a flash, instead of a beautifully softened edge, a gaping hole or "crack" appears right where a smooth, continuous surface should be.

Running complex automated scripts on raw, loose geometry can cause new rounded edges to stick to existing background lines, warping the final shape. 4 Ways to Fix the Round Corner Crack Top Issue 1. The "Scale Up" Method (The Most Effective Fix) sketchup round corner crack top

Hidden lines, internal faces, or duplicate vertices near the corner confuse the plugin's calculation engine. Step-by-Step Solutions 1. The "Dave Method" (The Scale-Up Trick)

Plugins require clean inputs. If your model contains internal faces, duplicate overlapping lines, or stray vertices near the top edge, the rounding algorithm gets confused and drops faces. 4. Oversized Rounding Radius If the model is strictly for 3D printing

Following these steps will ensure clean, airtight topology ready for rendering or 3D printing.

The best cure is prevention. Here is your pre-flight checklist before using Round Corner on a top face. The dimensions are spot on, the proportions are

Run the plugin with your desired radius. The larger scale gives SketchUp the geometric room it needs to calculate the smooth top faces without cracking. Close the component and delete the giant duplicate.

Activate the tool and click the arc profile face you drew in step 1.

In this comprehensive guide, we will dissect the causes of the dreaded "crack top," provide step-by-step repairs, and show you how to prevent it from ever happening again.

Select the perimeter bounding edges of the top face to act as a path.