Prusa XL / IKEA Trotten magnetic steel sheet holder

This uses 8 x 3mm cylindrical magnets (glued in). I found putting 2 magnets in the lower end and another at the top is sufficient (i.e. 6 total), but there are holes to add more. Holds 3 XL steel sheets. I designed it to stick out a bit above the worktop for better access. The magnets also reduce rattling of the sheets.
Standard print settings (PETG, 0.2mm or better). Enable supports to get a bit better definition on the little tab (not strictly necessary).