# Is it possible to have a plane with its normal as reference for Transform Orientation

Is it possible to have a plane with its normal as reference for Transform Orientation (Global, Local, Normal, Gimbal, View axis)? For example, I would like to select every face and scale to 0 to the normal Z-axis:

But if I select every face then this normal Z-axis changes:

• Ctrl+Alt+Space to create a transformation orientation aligned to the face then select all and S, Z, Z, 0 – Chebhou Jul 2 '15 at 6:32

You can create custom transform orientations. The shortcut is ⎈ Ctrl⎇ AltSpace or in the properties sidebar in the Tranform Orientations panel you will find a small + that will create a new orientation based on the current selection, in this panel you can also rename and delete any custom transforms you have created.