Designed this endcap for PVC tubes to transport posters & D&D maps. Take any old PVC tube, cut it to your desired length, and put these caps on each end! This model is designed for 40mm outer diameter tubes, but you can always just scale it according to what you need! It's made to be a friction fit, so YMMV in terms of it fitting well and being able to get it off.
The author marked this model as their own original creation.