Welcome to the Onshape forum! Ask questions and join in the discussions about everything Onshape.
First time visiting? Here are some places to start:- Looking for a certain topic? Check out the categories filter or use Search (upper right).
- Need support? Ask a question to our Community Support category.
- Please submit support tickets for bugs but you can request improvements in the Product Feedback category.
- Be respectful, on topic and if you see a problem, Flag it.
If you would like to contact our Community Manager personally, feel free to send a private message or an email.
NON-MANIFOLD errors visual explanation (zero thickness)

Just ran into this image and thought it would be a great visual for new users looking for answers to why they are seeing non-manifold errors on their designs preventing features from being successful. Also can be described as zero thickness geometry.
2