D&D flight stands

i wanted to design flight stands for air combat in D&D. they use a 1" od tube to give height. put one on either end of the tube to have it more stable at greater heights. i haven't tested all of them yet.

i have 1" tubes designed to be used with these. however you should be able to use any 1" od tube.
my design can be found here https://www.thingiverse.com/thing:4105104