UPDATE 4/7/2018 - Created divider inserts so that the bin could be used to hold tools. There are 3 inserts with different designs. They fit fairly well but very slightly loose. If you want them to be permanent, I would recommend gluing them down with a little bit of crazy glue. For the inserts, I would recommend using a brim or raft and not a skirt. The dividers go curved side down into the bin.

ORIGINAL - A simple waste/rubbish bin for 2020 aluminum extrusions. Its 50mm tall. The top of the bin is meant to line up with the top of the 2020 aluminum extrusion.