Collapsible Projector Screen

Edit: I had to make a little frame stand to support putting a small solar panel in a garden bed so I needed to make a joiner to make slightly weirder joins/angles. So I thought Id update it into here in case it helps anyone. Same basic design as the others in theory it just is more like the T joiner but smaller Honestly this can be considered anything you want to connect 20mm conduit with to make a frame for, I just happened to have made it for a portable and collapsible projector screen for my pico projector. I printed these in a config so I could have 2 sets of vertical supports as DIY projector screens I often see online are saggy in the middle but you can do this however you want, Im not your mum. I made these to use 20mm electrical conduit which is fairly cheap and light, so each slot is setup for a 20.4mm hole so these are a very tight/firm fit but they will fit (though that last one I had to use a hammer and a piece of wood to tap it down as the conduit kept turning in my hand a