Adjustable Spool Holder

Over the years, I've accumulated spools of different brands and widths. I was looking for a holder that minimised the horizontal space needed, as I usually store them in a box that fits 3–4 spools tightly.

The print is divided in two parts that connect at different widths: 60 mm (Sunlu), 70 mm (Bambu Labs), 80 mm and 90 mm (which might be too wide for most brands, but hey, you never know, I've some old ones that fit in the 80 mm width).

There are 6×2 mm magnet holes so spool holders can snap next to each other.

Tolerances are a bit tight, but this is designed for strength and not to be changing sizes too often.

This is basically the first thing I've designed, so any feedback is more than welcome!