Originally Posted by Haledire
Just remember that with the cut tool, if you're making a cut end on a vertex, you may need to check to make sure that the cut completed in the right location instead of making an extra vertex on top of the place you wanted it to be. If you wind up with a duplicated vertex you'll need to target weld it to fix it.
Ideally if you have a plan for a room or a house, planning the bottom polygons for the walls would be the most efficient place to begin. This would prepare the thickness of the walls if you were doing a full floor.
You would be able to prepare the edges for the sides of doors and windows and only have to worry about where to stop extrusions for the bottom of the windows, tops of the windows, tops of the doors, and the ceiling.
Sometimes itīs easier to use just else if you accidently create a new vertex instead of sticking to the existent one, just select the ones you want to weld or the whole model , depends on the density of the mesh and use a small threshold.
Itīs much easier for me then just target weld them.
And i made a picture of what you meant later on(donīt look at the comments i wrote them in german)
Edit: I know that the inner edges are not aligned nicely, but hey itīs just give an overview about this method
You can make additional cuts and leave out some outer edges if you want to make a hole for a door or something