Wanhao Duplicator I3 Y-Plate

This is my designe of a y-Plate/Buildplate for my Wanhao Duplicator I3.
Made this out of 4mm Aluminium.
The STL file has 2mm deep cutouts for the Springs.
The holes for the Leveling screws are just 3mm diameter - so the screws have not mutch play.
The middle hole on the Backside is for a cabel chain that i plan to install :) but should also work for a 3-screw leveling