There are multiple ways to do this, but the easiest would be as follows:
One of the easiest ways is simply to go into Vertex component Sub Object mode, select all the verts (or an areas where the vertexes are being a problem), from there choose "Weld" and give it a very low threshold (I like to use a value of 0.001). If there are vertexes that exist on the same space and can be legally welded together they will be. If it is unable to weld them then you have other problems with your mesh data that you need to fix.
One could also look at using the Vertex Weld modifier, set the threshold low (0.001) and this will do the same thing but to your object (or selection data that has been pushed up the modifier stack). Once done you can collapse the modifier or the stack.
In regards to "is there a maxscript that can do this". Yes there likely is, and its not hard to write such a script. However its worth noting that this wouldn't fix things any faster unless you are trying to process through dozens if not hundreds or thousands of shapes in your scene.
🙂 I am new to work with 3ds Max and I am struggling with this specific problem. I do not know how this happened. But my polygons in the object are not connected on many places (example on the photo). Is there any way how to find and weld vertexes there are on the exact same position? For example by using max script? Or is there any other solution?
