Hi

I imported a lampshade which is a mesh with zero thickness. I then used offset mesh to create a thickness by checking th solid box. However, I get two “parallel” meshes that are not joined but are separated by the distance I entered in offsetmesh.

I used checkmesh and checknewobjects but no problems with the mesh are shown.

The lapmpshade was originally a .blender file but I used an online converted to turn it into an .stl

I’ve been fiddling around late at night trying to get this to work and its frustrating.

Please help.

Here is what I get suing the check diagnostic:

This is a bad mesh.

Here is what is wrong with this mesh:

Mesh has 7124 degenerate faces.

Mesh has 137336 non manifold edges.

Mesh has 104164 duplicate faces.

Skipping face direction check because of positive non manifold edge count.

Important things to consider with this mesh:

Mesh has 112377 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 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: 7bdbabb5-7611-47d8-86b1-f882ed908769 (20)

Object name: Rhinoceros Binary STL ( Aug 10 2015 )

Layer name: Default

Render Material:

source = from layer

index = -1

Geometry:

Valid mesh.

Closed double precision polygon mesh: 354664 vertices, 207018 polygons with normals

bounding box: (-3.08832,-2.67868,0.0189817) to (2.97868,3.38824,5.0468)

Geometry UserData:

UserData ID: 17F24E75-21BE-4a7b-9F3D-7F85225247E3

Plug-in: c8cda597-d957-4625-a4b3-a0b510fc30d4

description: ON_Mesh double precision vertices

saved in file: yes

copy count: 1

This is a bad mesh.

Here is what is wrong with this mesh:

Mesh has 686 degenerate faces.

Mesh has 137336 non manifold edges.

Mesh has 104164 duplicate faces.

Skipping face direction check because of positive non manifold edge count.

Important things to consider with this mesh:

Mesh has 39361857 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 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: 0e5eda96-a5ee-4987-a808-1e00d85809e0 (19)

Object name: Rhinoceros Binary STL ( Aug 10 2015 )

Layer name: Default

Render Material:

source = from layer

index = -1

Geometry:

Valid mesh.

Closed double precision polygon mesh: 378910 vertices, 207018 polygons with normals

bounding box: (-3.38831,-2.97868,-0.175953) to (3.27866,3.68823,5.34677)

Geometry UserData:

UserData ID: 17F24E75-21BE-4a7b-9F3D-7F85225247E3

Plug-in: c8cda597-d957-4625-a4b3-a0b510fc30d4

description: ON_Mesh double precision vertices

saved in file: yes

copy count: 1