What are the most efficient workflows to create all quad junctions?

Question

In a video tutorial on All Quad Junctions some different types of junctions are explained. When trying to create them I struggle with extra edges and merging points, ripping points. That takes too much time

Is there a efficient reproduceable way to create these types of junctions?

Answer 1

The easiest way that comes to mind currently is to remove the critical faces, add some loop cuts, then create faces.

So for the second one, you would remove the critical face, make a double loop cut with Ctrl R then 2 then extrude the small edge in the middle, and finally select the edge pairs to Fill them with F.

The same applies to the third and fourth with some changes. For the first one: Remove the upper two critical faces, add the loop cuts, fill the proper edge pairs, move the center vertex down.

Answer 2

IMHO, the most effective way would be like this:

For the 1st case:

Method 1:

Method 2:

Method 3 (more effective for continuous editing):

For the 2nd, 3rd and 4th case:

Select target area, then I to inset, uncheck Boundary in F6 panel.

Answer 3

For the 4th case I found this workflow most convienent:

1. Poke one face AltP basically to limit loop-cuts in next step
2. Add the loop-cuts
3. Remove the middle vertex of the face 'poked' in step 1.
4. Extrude the points from the loop-cuts ends and create the required faces.

3rd case:

1. Poke two faces side by side AltP basically to limit loop-cuts in next step
2. Add the loop-cuts
3. Remove edges
4. Subdivide the middle edge
5. Add edges and finally faces