Checker
thingiverse
mattwj2002 noted in #reprap on 2012-03-19 that there were no printable checkers on Thingiverse, so I created a printable, stackable, mostly parameteric checker with a crown on one side. It will require good bridging. The bottom can either have a flat or domed indentation. ZGerman contributed the SCAD code for the ridges. It needs a little more work to finish paramterization. Instructions Download the STL or (better) download the OpenSCAD file, render in OpenSCAD, slice, and print.
With this file you will be able to print Checker with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Checker.