2" PVC coupler
thingiverse
Fits tightly, but not water-tight (unless you add a filament-friendly sealant. Can be used as an extension to table legs from this project: http://www.thingiverse.com/thing:1111686 If you found this useful, please share your work and be sure to peruse my other submissions which are almost as varied as they are many: http://www.thingiverse.com/3E8/designs Enjoy!
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