UM3 side rack
thingiverse
The original side rack was created for an Ultimaker 2, however for an Ultimaker 3, the size is slightly different. Solidworks drawing which can be adjusted to your special needs.
Download Model from thingiverse
With this file you will be able to print UM3 side rack 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 UM3 side rack.