I am electrifying a tank bag. I want to give the bag rigid walls so I can affix power ports, etc. What can I use to build walls inside the bag? I've seen instructions to use aluminum, but I don't have access to a metal shop.
I have in mind something like my poly kitchen cutting board. It is a millimeter or so thick, flexible enough to bend, but still stiff. However, it isn't long enough (I think I'll need something 3-4" wide by 3' or so long) and I'd like it to be a single piece. Being white or a light color to help brighten the interior would be a plus.
What can I use?
Dave