Spool rack (remix) for shelf storage

thingiverse

I keep a stash of mostly full spools on hand, which I prefer to store neatly on my printer's shelf. To make it easier to grab them and put them back away, I sought out something straightforward that would prevent them from rolling off. However, as is often the case, nothing quite met my expectations. Taking heinandre's basic design as a starting point, I tailored this solution to accommodate both the largest and smallest spools in my collection. Each rack can hold two 1kg spools, and I've managed to use as little PLA material as possible.