Do you have a multiboard and are curious about openGrid? These adapter boards allow you to print an openGrid board and mount it on the multiboard using the included bolts. 

Instructions

Choose a size. Print (3 walls, 15% infill). Print the 4 bolts included. Use these bolts to mount the openGrid to the small threaded holes of the multiBoard.

I recommend you try these shelves to see how openGrid works: https://makerworld.com/en/models/1469935-infinite-gridfinity-shelf-for-opengrid-very-strong

If you have an X1C

the X1C has an area that is out of bounds for printing. The 8x8 panel fits exactly the X1C. It looks like Makerworld claims it does not, but if you download it and slice it, you will see it is possible to print it.