Found a set of bins at the thrift store and I wanted to make a custom set of shelves for them. Found the filament spool shelves on Stemfie, however the author never published all of the parts. I liked the design so I made the necessary custom parts. The bolts are the standard that can be found on the Stemfie website (as of this writing, they are not on Printables). Note, use the beams that are the straight square ends.