Solid tool "Subtract" destroys model

[newnoob]

Hi guys,

I have a fairly curvy model (bezier curves extruded and edges rounded with fredos "RoundCorner") – when I apply the solid tool "Subtract" on it the outcome is that the surface of the model rips open on some locations

Does anybody know why that happens and how I can solve this problem? I'd be happy for any help.

The file is in the attachment.

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waben.skp

[Dave R]

I bet you're creating tiny little faces. Try scaling up by a factor of 100 or even 1000.

[newnoob]

THX for your help, it workes!

Can you eventually explain the magic behind this trick?

[Dave R]

Not exactly. It has to do with built in tolerances and SketchUp not making very tiny faces.

[newnoob]

Ok, THX anyway, I could solve the issue due to your help. I love this forum, I should get a pro member.

[Dave R]

You're welcomes.

Yes, you should get a pro membership.

I keep wondering when you'll become "Oldnoob", too.

[newnoob]

Not until I turn 30.

[Dave R]

Oh. I guess we'll wait.