I have a scan of a model figure from a highly reputable company.
I happened to run meshrepair command just to see if all was ok and got a shock, it says .:-
This is a bad mesh.
Here is what is wrong with this mesh:
Mesh has 5 non manifold edges.
Mesh has 5 duplicate faces.
Skipping face direction check because of positive non manifold edge count.
Important things to consider with this mesh:
Mesh has 7 pairs of faces that intersect each other. Although this does not
necessarily mean that the mesh is bad, it can cause problems if you’re doing mesh boolean operations with it.
General information about this mesh:
Mesh does not have any degenerate faces.
Mesh does not have any extremely short edges.
Mesh does not have any naked edges.
Mesh does not have any disjoint pieces.
Mesh does not have any unused vertices.
ID: 546aee50-8f8e-4b39-a994-9894adc17714 (39)
Object name: Binary STL [Unit:Millimeter] (Written by VGL 4.2.0
Layer name: original scan - scaled 94.58% to 1-32 5ft 9inch
source = from layer
index = -1
Closed double precision polygon mesh: 824686 vertices, 1448308 polygons with normals
bounding box: (-10.1687,-8.53704,-7.03663) to (9.03544,2.69461,55.1809)
UserData ID: 17F24E75-21BE-4a7b-9F3D-7F85225247E3
description: ON_Mesh double precision vertices
saved in file: yes
copy count: 26
so I have had to say stop printing, until I find out what this means, from the source, and effect on 3D print.
Just what is going on ?
Can one totally trust this ?
The Source will have to sort it out, its taken a year of waiting to get a scan finished without artefacts. and now as we print, I get this.
I had already run show edges and there were no naked edges, so thought all was good.