Hi all,

I'm fairly new and am just starting my project with google sketchup. I encountered non-manifold error when I am trying to upload my design to ponoko. While I do not have SketchUp Pro, I can't run Solid Tools.

I've been checking manually for hours and still have no idea why it cant work.

I'll really be grateful if someone can help me with the file, it's just an object and shouldn't take long if there's an automated tool.

i've attached the file im working on and I hope to get help soon.
another.skp

Thank you so much.

Best,
Jon