I am working with a flat plane and I am trying to weld some vertices. Some of the points have welded fine but others wont. Take this piece for example, the top and bottoms have welded but the ones in the middle wont. Same problem with another area: and another: thanks in advance for any help :)
Need to tell us which software you're using. Looks like 3ds Max? Editable Poly has built-in rules about not allowing certain topologies. You can't weld a backface to a front face for example. Editable Mesh allows this, but it has many limitations. You could simply snap them together, if you need the backfaces to be there.
looks like you're in max. i'm able to collapse that first example in max 2014 at least, usually your problem is caused by either an unseen backface or an impossibly thin polygon extruded from the vert in question. you can tell by clicking (not drag-selecting) on the problem verts one at a time and moving them to see if…
Rendering is not a good way to check for backfaces. Materials override this, for example. And it's slow. 1. Select the model, right click, choose Object Properties, and enable Backface Culling. Then just rotate your model and examine it. 2. Enable "Backface Cull on Object Creation" in the Preferences. This will make sure…