Solar panel hinges easily connect your portable solar panels together for ease of use, storage, and transport. The OpenScad source file has been included for those who wish to modify the file to suit custom size of aluminum panel frames. Printing Instructions: Bill of materials To Do: I hope that this will make it easier to manage your PV solar panels. I use this with the SOLAR CHARGE BOX http://www.thingiverse.com/thing:924112 that I designed.