Eppendorf Tube Rack in various sizes for 1.5 or 2 mL tubes
thingiverse
For a more fancy outcome, you can print the first two layers in another color. One rack of size 16x4 will cost you ~1.50 Euro of plastic. Make sure to print it with the springs facing down.
Download Model from thingiverse
With this file you will be able to print Eppendorf Tube Rack in various sizes for 1.5 or 2 mL tubes 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 Eppendorf Tube Rack in various sizes for 1.5 or 2 mL tubes.