THis is a Jedi trick, don’t tell around:
a - select one of the two vertices at the exterme of the segment
b - SHIFT-S cursor -> Selection
c - Select middle vertice
d - DOTKEY to switch to scale with respect to cursor
e - SKEY to scale
f - move mouse
ALT-S might be an answer, but the face is scaled too, meaning it gets bigger/smaller. If you really want to extrude the face normally without
scaling you must set yourself in a view where the face lays flat on the screen (which is a feat by itself) Then use the ‘Extrude Dup’ Mystical button (Mesh Tools Panel)
If you can rotate the view so that the face lays flat on screen…
You don’t need. They are not saved, so you won’t have them next time you open the file
To rotate the view so that the face is flat (this involves questions 2 and 3) you can select the vertices of the face and do Shift-V to Align View to Selected.
Then, to move the vertices along the plane defined by the edges, select top. To move them perpendicular to the face, select front or side and be reeeeeally careful when moving it ;). There’s no other way I can think of to move the face perpendicularly without scaling it.
It would be nice to be able to move things along the view’s axes though. I don’t see why it isn’t implemented yet, since it is possible to mirror across them; I should think it would be simple to apply this to transformations (unless the mirroring through the view’s axes was some sort of clever hack).
Agree, or like in WINGS, who permit any operation on x, y, z, perpendicular or parallel axis with vertices, edges or faces…
In Blender its not possible a simple face moving along his perpendicular axis?