Make tunnel creation level the top as well as bottom

[Omar 479]

Currently when opening a tunnel into rock, the second lowest corner snaps down to be level with the lowest corner making a flat opening, however the top corners stay (usually) at an ugly angle.

Forcing (most tidy builders) to clear three tiles of dirt above the tunnel entrance and surface mine down where the top of the tunnel is so it looks good when you open the tunnel, that's 8 corners of dirt times about 30 = 240 dirts to be dug, then usually replaced and surface mining just to make the top of a tunnel flat 😕 
 

Eliminate this by making the highest corner snap to the second highest corner when the tunnel is created.

[Skyfalls1 17]

no need for that-just put  a mine door on then remove-it levels the top

[Jaz 2,666]

Hmmm. Since multiple tiles wide doors the new tunnels snap down the top to flat too. Which is bad in my view as makes it no more possible to make a nice arched 3 tile entrance.

[Omar 479]

1 hour ago, Skyfalls1 said:

no need for that-just put  a mine door on then remove-it levels the top

Nice, ty, i'll try it out.