If you are trying to get a vertex or a face to move along just one axis while editing a model, is there a way to do it without the scroll wheel?
I thought I got it to do so once, but I’m not sure how. In that case a group of colored arrows matching the axis arrows appeared inside the object. If I clicked on the arrow it could be dragged in the direction (positive or negative) of the arrow only. Does anyone know how to get to that mode?