I finally finished mounting my two 250w solar panels on the roof of my RV. I made the brackets out of angle bracket and tuna cans. I needed six cans per panel so I've been eating lots of tuna. Eventually I got sick of it and dumped the remaining five cans in a jar in my fridge. I'll eat that when I'm not sick of it.
I wanted to be able to remove the panels to maintain them easily. Preferably this would not involve unscrewing the mounts from the RV where they'll be caulked down. I'd rather be able to remove the panels from the brackets.
Doing this posed a problem. Once the panels were mounted flat, it's hard to reach around to hold the nut inside the panel frame. So how can I unscrew them without just spinning the screw and nut together?
My first method was to JB weld the nut to the panel frame. I think this worked to some success, but we'll see when It comes time to remove a panel.
I then tried reversing the screw so it'd be poking out. By filing the end of the screw into a square or flathead shape, I can hold the tip of the screw with vice grips while turning the nut. Both are on the outside now.
I asked the guy at the hardware store what the actual correct way of doing this was. I was surprised that they don't sell crown-shaped nuts with teeth that can dig into the aluminum frame as I tighten them. Like a lock nut that doesn't swivel. So I don't know a better way to do this yet.
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