I needed a way to mount my Aosu security camera's solar panels on the gutter because I didn't want to drill more holes in the brick than I needed. I found a mount online but it took a lot of filament and was really big so I decided to design my own. I am still learning CAD design so its not perfect but it does the job pretty well. I took inspiration from a metal bracket off of Amazon that's $15 and added the threaded base so I could use the included hardware to the solar panels. The threads on the mount can get chewed up with multiple uses so I recommend just installing the mount and leaving it on. I also tried the design the top as closely to the original as possible so the original mount can lock in place. The bracket pushes up on the solar mount locking securing the mount at whatever angle you need but you can still move it with force and I don't recommend that.

In my original design form the photo, I added screws on the front so you can secure it from both sides but I found it wasn't needed and took them out. The screws will lock in perfectly under the lip the gutter has and they fit pretty tight so you shouldn't have to worry about them coming loose. You can tighten them by hand but I did leave a slot for a flat head screw driver if you have one that will fit. The screws are slightly smaller than the threaded holes but they are tight enough screw in without issues.

I also used Elegoo's Rapid PETG to print these but ASA or ABS would probably withstand the weather better. I also printed mine flat and painted supports leaving a gap between the walls so it can be pulled off easier. I tried print one on its side to use less supports but it didnt print the threads very well. I used a .2 layer height with 35% gyroid infill. It seems to be sturdy enough but you may want to use a higher infill on the screws and print them separately. I think you can get away with about 15% infill on the main model because its not supporting too much weight. I have 3 bottom shell layers and 5 top shell layers as well as 2 wall loops. I just used these from the profile I created so I haven't messed with changing anything else. For supports, I just did the manual normal supports and have them set to snug to reduce support waste.

I am not sure if this mount will work with other solar panels or not but it looks like most use the same design when looking on amazon.