OpenCutLIst- Thickness undefined issue on sloping component

Hi, I’m fairly new to Sketchup, but wondered if anyone can shed any light?

I’ve designed a project, and while trying to create a cut list, I’m getting an error “thickness undefined” as it’s taken into account the width of the angle in the box.

The thickness of my component should be 20mm, not 170mm.

Any idea what I’ve done wrong/how to fix this?

Thanks!

Try changing axes orientation
trm-04

Thank you so much! Will try that :slight_smile: