# How to stop blender from generating duplicate vertices on export?

Yes, I know, use Mesh -> Clean up -> remove by distance. I did that, and in blender, it appears as if things are all fine and dandy, I made 3 cubes and made pyramids at the end, total vertex count is 18, makes sense to me. Export object as gltf, and I get... 84 vertices...

This is the GLTF report

gltf image, and my blender:

You can see in the bottom corner, 18 verts....

And for the final touch, here's the output from my tiny_gltf loader c++ program, which outputs vertices, and says the number of vertexes and indexes.

{NORMAL: 1}
{POSITION: 0}
{TEXCOORD_0: 2}
COUNT 84
INDCOUNT 96
(1, 1, -1)
(1, 1, -1)
(1, 1, -1)
(1, 1, -1)
(1, 1, -1)
(-1, -1, 1)
(-1, -1, 1)
(-1, -1, 1)
(-1, -1, 1)
(-1, -1, 1)
(-1, -1, 1)
(3, 1, -1)
(3, 1, -1)
(3, 1, -1)
(3, 1, -1)
(3, -1, -1)
(3, -1, -1)
(3, -1, -1)
(3, -1, -1)
(3, 1, 1)
(3, 1, 1)
(3, 1, 1)
(3, 1, 1)
(3, -1, 1)
(3, -1, 1)
(3, -1, 1)
(3, -1, 1)
(1, -1, -1)
(1, -1, -1)
(1, -1, -1)
(1, -1, -1)
(1, 1, 1)
(1, 1, 1)
(1, 1, 1)
(1, 1, 1)
(1, -1, 1)
(1, -1, 1)
(1, -1, 1)
(1, -1, 1)
(1, -1, 1)
(1, -1, 1)
(4, 0, -0)
(4, 0, -0)
(4, 0, -0)
(4, 0, -0)
(-3, 1, 1)
(-3, 1, 1)
(-3, 1, 1)
(-3, 1, 1)
(-3, 1, 1)
(-3, -1, 1)
(-3, -1, 1)
(-3, -1, 1)
(-3, -1, 1)
(-3, 1, -1)
(-3, 1, -1)
(-3, 1, -1)
(-3, 1, -1)
(-3, 1, -1)
(-3, -1, -1)
(-3, -1, -1)
(-3, -1, -1)
(-3, -1, -1)
(-3, -1, -1)
(-1, 1, 1)
(-1, 1, 1)
(-1, 1, 1)
(-1, 1, 1)
(-1, 1, 1)
(-1, 1, 1)
(-1, 1, -1)
(-1, 1, -1)
(-1, 1, -1)
(-1, 1, -1)
(-1, -1, -1)
(-1, -1, -1)
(-1, -1, -1)
(-1, -1, -1)
(-1, -1, -1)
(-1, -1, -1)
(-4, 0, 3.01992e-07)
(-4, 0, 3.01992e-07)
(-4, 0, 3.01992e-07)
(-4, 0, 3.01992e-07)


Look at all those duplicates! how do I stop blender from ruining my meshes on export?

This doesn't really answer my question, but I found a temporary work around by copying the vertices on the mesh and deleting the old one.

Q: Is this just a really bad bug or something?

• something hidden in the outliner? – Allen Simpson Dec 10 '20 at 5:29
• @AllenSimpson I undid what I just did, and there did seem to be like 5 duplicate collections... and 4 meshes... I was on the scene instead of blender file menu. Yet multiple times I removed duplicate vertices, and when I move the selected object, there's no objects underneath. So I don't understand how these random objects got left around. – hythis Dec 10 '20 at 5:49
• Maybe this docs.blender.org/manual/en/2.80/addons/… – lemon Dec 10 '20 at 7:03