This is a storage solution for filament that utilizes 13mmx11mm metal tubing and a printed bracket to make a simple and cost-effective solution. 

Calling upon the Googles for a solution, I came across a post where somebody used a shoe rack to store a large amount of filament. At approximately $20, this seemed like an easy solution. Once I received the shoe rack, I realized that the depth was excessive for what I needed and so I redesigned the brackets. 

This design will allow up to 10 shelves. Currently, I only had need for 4. With my Elegoo and BambuLab filament, it holds 5 spools per shelf so you could easily store 50 spools with this design. Also of note, you only use half of the horizontal rods (as the shoe rack used 4 per shelf and we only need 2) so figure out what you are going to do with the extra 20 rods! :)

Here is the link to the rack I used as I could not find the tubing cheaper. (non-affiliate)
[https://www.amazon.com/dp/B09Q678QVP?ref=ppx_yo2ov_dt_b_product_details&th=1](https://www.amazon.com/dp/B09Q678QVP?ref=ppx_yo2ov_dt_b_product_details&th=1)

Note: If you look closely, you may see cracks on the filament rack bracket in the photos I shared. Don't worry, I adjusted tolerances and the rods fit much better now, but it wasn't worth a reprint for myself.