Filament Rack Remix - Copper Tubes with Center Stand

prusaprinters

I wanted to use some standard type M copper tube from the local hardware store and build a rather long version of this. The longer version necessitated a center stand because the copper tubes flexed too much. The center section is probably unnecessary for shorter racks. Ours was about 4 feet long, so it seemed prudent. The new holes are .630 inches, which is just enough for a tight fit on an outside diameter of 3/8". This corresponds to a ½"  type M copper tube that is commonly found in hardware stores in the US. Here's an example on McMaster for reference - https://www.mcmaster.com/type-m-copper-tubing/ Shoutout to the original author BTR3D