cut

[erilaz]

The easiest way would be to do a bevel, flatten it, then add the extra vertex.

I assume you want those edges joined to the outside polygon!!:D

Excuse the quick job, but you get the general idea:

[niwouinwouin]

thanks.
But how can i move vertex on a planar surface without deform it?
the surface witch is not aligned with the axis won't be planar anymore!

[eddy-3ddy]

option 1: First you extrude it al little bit, then bevel it
option 2: Delete the poly where you wanna create a second poly in. take the edges from that hole, and shift+scale and you've got another little hole, again shift+scale and then collapse the edges.
option 3: Snap at midpoint and vertex, then create diagonals in the poly, then create at the middle of the new edges a new poly
Those are my tactics.


EDITED -----> Oke, someone was faster then me

[eddy-3ddy]

But how can i move vertex on a planar surface without deform it?

Use the 3d snap "face" (rightmouseclick on attached button)

The face you are changing is in memory, so you can move over it.

[niwouinwouin]

thanx all!

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