This is designed to prevent the filament spool from scratching the side of Centauri Carbon 3D printer.

All you need is the original screw, M3 x 6mm socket head screw also works. 

If you prefer a more secure mount, there are slots on the back for different size magnets (6x3mm, 5x3mm, 4x3mm, 3x3mm), 11 slots for each size (8 on outer ring, 3 on inner ring). The fit might be a little loose, so it would best to super glue them.

The center hole is 45mm in diameter. If you're not using the stock spool holder please double check to make sure it'll fit.

If you have some 608 bearings, I'd recommend this spool holder by Chirimorin - [https://www.printables.com/model/1210787-bearing-spool-holder-for-elegoo-centauri-carbon](https://www.printables.com/model/1210787-bearing-spool-holder-for-elegoo-centauri-carbon)

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Update (10th August, 2025):
-Added magnet slots to the inner ring
-Added one extra top layer. Previously, it only had 3 layers on top of the magnets, which was a little too thin
-All magnet slots are now 0.2mm shallower, magnets sit more flush than before