I needed a grid alignment tool for Keyswitches that came in a dumpad kit. The PCB had alignment holes in the key footprints but the actual switches had no way to keep them exactly orthogonal and equidistant from each other. 

I have made a parametric .scad file so that you can easily make your own grid and modify every attribute of the model.

 There should be enough friction in the print to hold the switches so that you can solder them easily, so you may need to tweak slicer settings.

P.S. - Don't put your DSA keycaps on while the grid is still in XD