[Russell Sobie]

Pivoting at the wheel pitch is basically a poor idea overall, unless I can ensure locking the whole thing into place, which I cannot. I changed the design to use a "sleeve" rail that would slide over the outside of the wheel's side posts, but it turns out I can only get that in 20 foot increments, at about 200 USD a pop. Sooooooo no.

This is where I am now, which (if I can get it to work) requires no special parts that I don't already have (I have two spare cam levers already):



This separates the wheelbase from the tv stand, obviously. And instead of worrying about a sliding mechanism binding up, this basically just makes it so the wheel and the bar it is mounted to just pop out of the top so I can place it on the floor. If I get this to work, I might see if there's a clever way I can pull it off and hang it to the side without obstructing the display (the whole point of this stupid thing).

Separating the wheelbase from the tv stand means I go up to 4 rails of the channel strut, which adds a bit to the price, but at this point I feel like if I don't build this thing I'll regret trying. I buy most of the fittings and a couple of short rails to experiment with the above solution today. Then I'll return the short rails and get 4x10 foot ones when I have everything physically proven. 

If I've priced this thing out correctly, it'll come to about $250 USD... which includes a special metal cutting saw for a friend's miter saw so I can cut the rail without killing anyone or burning anything down. I hope that works out well because if I've measured correctly, I'll have one 2 inch piece and one 10 inch piece left over. What's that saying? Measure 18 times, cut once?