That looks like a really good design. It looks, aside from the hole in the side for a screwdriver and the tubes, like something I could cut on my CNC machine instead of printing it. I'm thinking HDPE. I could use carbon tubes for the lines, and install them after cutting, and I am thinking of some kind of rubber foam stoppers to prevent the line from sliding. How do you plan to get the lines through the tubes without disconnecting them from the kite? Or do you plan to install the mount when you rig the kite?
What file format are you using? I think I could reproduce your design on Google Sketchup.
Learning more with each design! I tried to design/center everything properly this time around. Still having issues centering curved shapes that are sized differently but the mount is symmetrical. This new shape works REALLY well for 3d printing, almost no flaws while printing (relative to the printer). I need to remove the curves on the GoPro arm mount, they’re ugly at low infill and just aren't necessary.
I was thinking rubber stoppers for the hole on one side only. I wouldn't want to put anything on the safety line unless I'm using a Peak4.
That just gave me an idea for a crazy loop video with the 4 or 5m and no arms blocking the view.
The lines will need to be fed before you rig them to the kite. Any break in the mount will create a snag point. I want to loop the kite with a camera on it without fear of line snags . At least the majority of snags and if one happens, I don't want the line to get stuck inside some edge/cutout so it can't easily slide off.
From a very short line test, the short arms work. BUT it seems they have a tendency to make the camera get stuck at a slight angle after the lines lose tension. Not sure how much effect this will have in the real world using long lines at a much wider angle. May not even be an issue because when the tension is applied it centers out.
I'm using Fusion 360. I can share an STL once I'm finished or whatever else it can export. I can send you a work in progress privately, but I'd rather not put anything up publicly that I don't feel is at least half-ass decent. Thingiverse is full of junk like that already. I think I'm very close though!
I haven't tried printing with HDPE, doesn't seem like it's very popular or easy to print with. Can't even find a spool of it for sale? Hmm... I thought about offering to print a couple to people if they were willing to hook me up with a spool of nylon filament; ~$35 on Amazon and shipping the mount, maybe ~$8. (I calculated it’s costing me $6-8 to test print each one) But then I checked and it would cost about $40 to print it from one of the reputable printing services using nylon. Though price jumps up to $100 if you want it "waterproof". I'll have to find out what sealant they're using. It's probably best that people take their chances without me being responsible.