interlocking grid
thingiverse
Interlocking grid system initially made for holding small petri dishes in position on a tray. Option for a floor means that racks can be made for bottles etc. Check https://github.com/davidelliott/parametric-lab for the latest version or to contribute your improvements. If you use the customiser note the following: cells_x must equal cells_y only build grid or walls (grid=0/1 , walls=0/1). If you build both together it may crash.
Download Model from thingiverse
With this file you will be able to print interlocking grid 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 interlocking grid.