Minigraph M4 Memory Underpinner
An air powered piece of equipment that inserts a wedge or v-nail into the back of the frame, reinforcing it at the corners.
It has its own memory, remembering the optimum positioning for 000′s of frame moulding profiles.
For deeper profiles it will double or treble up on the wedges, an awesome sound when its in full flight.
It makes the mechanics of making the frame quicker. Above all it gives you an assurance of a well constructed frame that will last many years.