Toothed belt spacer
thingiverse
If you're using the same Chinese printer as shown in photo 2, the toothed belt's x-coordinate may not be parallel, causing its sides to form an angle. This issue can be resolved with a simple spacer bracket. To accurately align the belt, place M4 washers between this spacer and the extruder bracket. Use these washers to set the GT2 pulley in sync with the other pulley on the opposite side. For extra stability, I recommend using two washers for each bolt.
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