All arrows of gizmo only moving on one axis

[AsaSK]

Hi all,

I'm trying to drag out an edge and all of a sudden the only axis I can move on, whichever arrow of the gizmo I use, is the Z-axis. I want to drag out the edge on the X-axis and all I can do is move it up and down. Help!

[paulneale]

My guess is you have turned off the transform gizmo. CTRL+SHIFT+X will turn it back on. 

[AsaSK]

Hi Paul, thanks for your reply. Unfortunately no joy, but I've made a video showing exactly what happens.

[paulneale · Accepted solution]

Ah you are extruding an edge? Do you have edge constraints turned on?

[AsaSK]

Ah, that did it! What does edge constraints do exactly?

[paulneale]

Keeps the verts that are being moved constrained to the edges that they are connected to. Great for sliding the verts over the existing surface. There is also a face and normal constraint as well. 

[AsaSK]

Great stuff, many thanks Paul.