Windlass Clamp

Why this Thing?

I have two doors to glue up and no clamps to achieve nirvana.

I looked at the frame and ran various possibilities till i came up with using a windlass.
I have made doors before using a rope windlass and wood cauls to stop the ropes
digging into the frames and marring the crisp edges - never worked as everything shifts
around and alignment is next to impossible - bummer.

I've designed a two part holder and guide unit.
The fixed part screws to the rails and the sliding part fits over the stiles and
the stile is restrained with a screw and washer fixed loosely from the fixed
part face through the slider into the stile face.
The rope then wraps over a pair of units (2 per each rail position).
The windlass is tightened and the stiles compress onto the rails without
shifting the parts out of alignment and the top smooth guide prevents
the rope from getting damage.
My door has 3 rails so i need six sets of these units per door.

I will put pics on once the doors are clamp