The original Simple Filament spool stand v2 by FablabMoebius has seen more use than any other thing I have printed. The name says it all really, it's simple, and my spools just stand perfectly in it. To get my 3D Prima rolls to site I also had to print off a 6.5cm spacer which I found from SeanSu here. I liked the extra support I go from the triangular lip too.
Despite a comment on SeanSu's make, my new Hatchbox rolls are 6cm in width and do not fit my 6.5cm spacer. SeanSu's Tinkercad link no longer works, so I went about creating my own - and here it is... a 6cm bridge, no more, no less!
You may need to file/sand down the connecting 'teeth' to get a snug fit, and don't forget to print two!
Designed in Tinkercad in minutes. Measured the originals to get some basic dimensions and snapped together some simple shapes. Ideal for Tinkercad use, just start, create, save and print in a matter of minutes!