Floor mat
thingiverse
Save your knee, don't stand on concrete floor without a mat. your filament is only limit of how big mat you can build with these files. :) Largest part is centerpiece 190x190 mm, so most printer can print it.
Download Model from thingiverse
With this file you will be able to print Floor mat 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 Floor mat.