How to make a vertex meet an edge exactly? I want to move the selected vertex along the blue axis until it exactly meets the intersecting edge. How can I make sure it exactly touches the edge without gaps or overlap?
Hold CTRL while moving the vertex and it will snap to the midpoint of the edge (it will also snap to other vertices). Once you get it on the edge, you can switch to the "Normal" coordinate system and slide it back and forth along the edge.