Model has unexpected Overhang in Slic3r

SketchUp 3D Printing
1

Hi All, im quite new to Sketchup and 3D Printing.
Now my model looks great in sketchup, looks level and all.
but Slic3r detects overhang on places i didnt expect.

can anyone help?

Attached is my model, STL fileblinker full with cutouts.skp (1.2 MB) blinker full with cutouts.stl (147.9 KB)

overhang slic3r
overhang slic3r2878×872 555 KB
and slic3r screenshot

2

Try to make it a Solid Group, as it should for 3D printing

sgr-02
sgr-021000×600 454 KB

3

Thank you for your reply @mihai.s. Unfortunately the same error is still there

4

blinker 2.skp (1.2 MB)
Try this one. Is it any different?

5

Thank you sir, that solved the problem.
May I ask what you changed?

1 Like
6

It was not aligned with the main axes and of course, it was not a Solid Group.

sgr-03
sgr-031000×600 1.29 MB

7

:open_mouth: i should have noticed that myself :frowning: thank you so much for your help!