Change wall thickness of a box

[titilecostaud]

Hello, I want 3dprint a small box, but the wall thickness is too low (wall not printed), and i don't find how to change it without all restart.

Thanks for your help.

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singleboxssk60.skp

[ecati]

Did you import this object from another program?

[Box]

First you need to import the (I'm guessing .stl file into sketchup at a larger scale. This will allow it to import without all the missing faces. Once you have done that you can smooth all the triangulated edge so you have a solid that you can then work with.