Scaffold
thingiverse
This is a great test for your printer I still have to make a large print but haven't got round to it maybe you can make one and post yours ....
Download Model from thingiverse
With this file you will be able to print Scaffold 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 Scaffold.