You can define a custom axis from a face with ctrl+alt+space, but sometimes even that's not good enough because some edges are sheared which offsets the x and y directions.

What would be helpful is if instead, I could simply click on an edge, and define a transformation axis with a x, y or z that runs perfectly in the direction of the two vertices of the edge I selected. Does blender have such an option?

  • $\begingroup$ That thread didn't answer what I want but I found a solution myself so it's fine. $\endgroup$ – John Joe Jan 19 '18 at 5:09

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