Print plate cover for Davinci Pro laser engraving

I designed this to sit securely on my print bed for my Da Vinci Pro printer so that i can use the laser engraver more accurately.
To use I printed 2 of each of the STL so i had 4 plates total, they will fit together with some force to create a snug fit. Then I taped a piece of cardboard to the top and used the engraver to engrave the grid (after resizing it) onto the cardboard so that I would have a grid that matched the grid on the XYZ engraver software.