PCB Frame Workbench 20mm tube adapter
thingiverse
For me it was very hard to find suitable 22mm tubes, so I created an adapter for 20mm tubes. This PCB Workbech (http://www.thingiverse.com/thing:35042) is a great tool for working on PCBs
Download Model from thingiverse
With this file you will be able to print PCB Frame Workbench 20mm tube adapter 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 PCB Frame Workbench 20mm tube adapter.