i need some Emergency Advice
say i have a cylinder with two flat sides. one of the sides has an intricate design of edges and vertices that i want to extrude into something. the other does not. how do i quickly copy said design from the complete side to the other.
In edit mode, Box Select (B) and Delete (X) Faces Only of the non-detailed side, then:
Move the 3D cursor to the center of the cylinder
Select all with A (possibly twice, the first time may clear an existing selection)
Press SHIFT+S, select Move 3D Cursor To Selection
Box Select (B) the detailed side
Duplicate (SHIFT+D) and Rotate (R) the duplicate along an axis (X, Y, or Z during rotate) into position, with exact values (type numbers during rotate) if possible
Remove Doubles (i don't know the key, use the Space searchbar menu thingy) to merge the new face into position
This is the best method I can think of; something with Mirror or Array modifiers might work too.