Simple printable cleats to hang bench planes on vertical, or inclined surfaces.
My method for mounting is to attache the bottom cleat first, then take the plane and slide it up so it will just clear this bottom cleat. Keeping the plane in this position, install the top cleat as far as it will overlap the toe of the plane, and affix it in this position.
This way when the plane is resting on the bottom cleat, it is still captured at the top.