3 point bed holder for tehnologika.net y-carriage

3-point plate (hot bed, glass, alu plate...) holder for Y-carriage from:
[TEHNOLOGIKA](http://tehnologika.net/Malyan-M150-Aluminium-composit-Heated-Bed-Support-Y-carriage-Plate-Reprap/)

why? - I'm not using the aluminium plate at all because have a piece of borosilicate glass that has heater glued directly on it so no screws in/trough glass/heater so something like this is required. As you can see in one of the pictures, you can use your original heated pcb bed (with or without glass on top