Very simple shield model has erronous areas in Cura

[wouter93 0]

I am trying to print a small shield (attaching it to a d&d miniature), but cura X-ray shows some erronous areas  and the printing fails as well.

 

Here's what it looks like:

 

 

 

 

 

Anyone have an idea on why this simple shield cannot be printed?

 

shield.stl

 

[Smithy 561]

Your model is probably not watertight and therefore the slicing fails and Cura shows you the red areas.

 

Have you designed the model yourself and if yes, with which software?

[wouter93 0]

Looks water tight to me, if you mean holes.  

I pulled it off a different character using Blender. I didn't model the shield myself

 

Even then it seems a bit ridiculous to mark the entire 2 sides red if there is just a hole somewhere?

 

shield.stl

[Smithy 561]

Could also be a problem or failure during the export to the STL file and not water tight doesn't mean you always see the problem. A single polygon which is missing could be enough.

 

Try to repair the STL file here:

https://service.netfabb.com/login.php

 

You have to create an account, but the service is free.

[wouter93 0]

I managed to fix it in Blender (there were no holes).  The 2 sides of the shield were isolated planes,  which isnt allowed for some reason.

 

I connected those 2 circles into a cylinder and now it prints fine

 

 

In fact from the pictures you could've easily guessed this instead of 'check for holes' 🙂

Edited September 30, 2019 by wouter93

[johnse 29]

1 hour ago, wouter93 said:

The 2 sides of the shield were isolated planes,  which isnt allowed for some reason.

The reason is that the mesh needs to clearly delineate what is inside vs outside the solid. Isolated planes do not define a solid.

 

If you are interested in more details, you can google “boundary representation” or “BREP”.

 

glad you were able to fix it.