Please watch that tutorial with caution, at the left bottom side you can clearly see that he uses Loop cut shortcut Ctrl+R, this makes edge in the middle of your mesh and by scrolling your mouse wheel, you can make any number of cuts you want
I do not know how to adjust the colour of the inactive object in edit mode, but I do know how to control the fading level of the object. It`s very simple just tab into edit mode, go to the 'overlays', check 'fade inactive geometry' box and then change the value to whatever you want
Yes, there is a way to do this. I'm using 2.93. First, select the vertices that you want to mask in edit mode. You can make them into a vertex group if you want to save the selection.
Go into sculpt mode, and go to Face Sets > Face Set from Edit Mode Selection. You should see the selected vertices change into a different color on your mesh. Now, if you ...
The scale command takes both an axis and a numerical argument.
For your example, SZ.25Enter would scale the selection to 25% of its size only on the Z axis.
The axis designation is optional. If you use Shift before the axis letter it will scale on the other two axis. I.E. ShiftZ will scale on X and Y but not Z.
If you leave the axis out it scales on all ...
Bevel modifier's limit method has an option called vertex group. Select that as the limit method. Manually select what you want beveled and assign it to a new vertex group. Reference this vertex group in the bevel modifier to only bevel what you've selected.
Your first example isn't working because you are toggling the selection rather than setting it. change
for it to actually select all the faces. Also, you don't need the second line, so your first example could be as simple as
You have some concave N-gons collapsing in unexpected ways.
You should study your topology and cut up any faces that have more than 4 edges. This isn't the only place you have it, but it's the only place where the broken geometry is immediately visible
To cut a face, select the 2 points you want to cut trough and press J.
You may also find it useful to use ...