The idea comes from https://www.bilibili.com/video/BV1nt4y1p7HY/?spm_id_from=333.337.search-card.all.click&vd_source=297e245ed003be1651eede67474320a3. A single-disc or stackable 608zz bearing can be placed between the base of the consumables rack and the screws, with a lower cost than the rice bucket. This consumables rack can accommodate consumables with an inner diameter of 30 to 85mm and a thickness of