I’m having a problem which I explain in this video.
Probably a simple solution, I’m not a CAD expert lol
This is an easy one. You exported a defective mesh, which caused the “non-manifold parts” error. In layman’s terms, imagine a woven basket made of triangles with holes in it—you’re asking the slicer to figure out how to connect those holes. When you click “repair,” it uses a math formula to guess where the missing connections go. In this case, it assumed the inner circle was part of an enclosed space and sealed it off.
The simplest fix is to export the model as a STEP file from your CAD software. STL files are mesh-based and often export with flaws. STEP files, on the other hand, use mathematically defined lines, arcs, and surfaces. When imported, the slicer will convert the STEP into a mesh internally, producing a cleaner result.
If that doesn’t work, other solutions are more complex. I can either walk you through them (which is a bit involved) or, if you upload the raw 3MF without the repaired mesh, I can attempt a fix using other tools.
Out of curiosity—did you make this model yourself or source it from elsewhere? If it’s your own, were you using Blender or maybe SketchUp? Just trying to figure out which CAD tool generated it.
3 Likes
Thank you so much for the reply! I have a small custom 3D printing business, and this is something a client wants me to print. So, no, I did not design it. I will see if they can send me a .STEP file. I use Fusion360 for my designs and always export as .STEP. I’ll let you know if this works. Thanks again! 