Solar light pipe mount
thingiverse
I designed this because several of the solar path lights that I have now have broken mounts. This mounts to the base of the light, which in turn mounts into the tube. Depending on your tube geometry you might need to increase the width of the mount. It should work with any single-point light mount however.
Download Model from thingiverse
With this file you will be able to print Solar light pipe mount 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 Solar light pipe mount.