Trim gives strange results

SketchUp Pro
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Trimming a group against another gives various outcomes. Both are solids. See the clips


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Share the model.

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Here it is.

trim_error.skp (331.0 KB)

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Scale! it is too ■■■■ small.
I can’t say too ■■■■ small but I can say too fucking small.
The delights of forum censorship.

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OT: So “■■■■” is a banned word while the explicit sexual expression isn’t!

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Indeed, I can’t say dam with an n but can say …

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Look here if you need further edification.