How can I extrude this middle part of the roof down so that I can start putting tiles on it? If I extrude + scale down it looks weird, same if I try extrude + move. I simply want it to become thinner, but not scale inwards on the sides.

enter image description here

  • 1
    $\begingroup$ you can't extrude down in that case, except with addons like Destructive Extrude, I don't know if it's available for 2.8: youtube.com/watch?v=beZau_wpR-U other than that, you you can do it the other way around, meaning you extrude up each side, etc… $\endgroup$ – moonboots Nov 16 '19 at 11:12
  • $\begingroup$ The updated version is available on GitHub page. $\endgroup$ – blablaalb Nov 16 '19 at 14:44

One solution would be to Inset the faces with value of 0.
And at the same time add a negative depth.

Just like this. enter image description here

Or, if you want better control. Leave the depth at 0 as well, and just use the Move Tool to move the top faces where you want them.

| improve this answer | |
  1. Start
  2. Moved to horizontal
  3. Top and side moved down and right by 0.3 respectively
  4. Extruded by 0.3
  5. Step 4 rotated 90 deg Y and sheared, rotated back. enter image description here
| improve this answer | |

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