Modular Girder

I recently wondered about getting a tower for my Ham Radio antennas... so, why not print one. I came up with this modular system that can be used for towers and more. The blue models here are printed at 50% and take about 4 hours per module. They are strong once glued. There is a photo there of the tower on its side, spanning my desk sides, and bearing a lot of downward pressure. The "v2" module omits the cross beam and unnecessary. The original needs supports, version 2 does not. Verson 2 modules print in just about 20 hours and are about 6 inches tall... so with two months of steady printing I should have a tower 30 foot tall for about $60. Not sure how well it would hold a rotor and yagi beam...