I really loved MikeFlier's idea of a modular spool rack, but I found that the honeycomb design on the supports was a pain because it forced you to print with supports that were difficult to remove. I modified this design to have a flat support between the two sides. In my case, this reduced the amount of material used to print. I don’t have a tape measure that has millimeters on it, so I cut the upright dowels at 7.75”.

From MikeFlier's original description:

I had been storing my filament in sealed storage bins which became frustrating having to dig them out every time I searched for a specific color. I needed a solution particular to my available space but also wanted one I could adapt for other spaces.

I came up with this modular rack. It can be stretched or stacked as tall or wide as you like using the included support braces.

It was designed for ¾ inch dowel rods.  You may want to make a test part prior to printing an entire frame piece. The vertical rods are 196mm which provides a small amount of clearance for a 200mm spool.

#6 screws to fasten the frame to the rod. I recommend at least a 20mm or 1" screw length.

Mini caster wheels can be installed to the bottom for easy movement as desired.

I used these from Amazon. [https://www.amazon.com/gp/product/B0BS287L8Q/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1](https://www.amazon.com/gp/product/B0BS287L8Q/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1)

Assembly Video