The 18-yuan PDD box fits the U1 top cover

The thin piece on top can be made by yourself. Print a base, and by changing different clamps, it can fit different boxes

The original author is thisSnapmaker U1 Storage Box Riser - Free 3D Printed Model - MakerWorld

EVA foam tape needs to be attached to the bottom of the base; I used 5mm wide and 2mm thick tape here. Without this tape, the resonance will be greater

The PDD link shows out of stock. Search for similar sizes. I remember there were boxes of the same size 50.5*37.5*29.5cm when I bought it

After searching around, I found one that looks the same but is slightly different in size, for reference

https://mobile.yangkeduo.com/goods.html?goods_id=880578615782&page_from=23&_oc_trace_mark=199&pxq_secret_key=OTMEXR5OH72OTOC7JMJDGTKCUDGMMPDYOIJBQ3UUDXKM2XRRGQNA&_oak_share_snapshot_num=2301&_oak_share_time=1781527422&share_oak_rcto=YWJi_1WfEpiTxRZNpR5__QmDuoJuSwjLcY2YUDjBkmkvOF98vR6MVwCa&_oak_share_ticket=01-0000000029-7ee725011a8d9fbe4a2932eddee20733b6e8420e3e91a26b341268f1d942b7fd-1782823467&share_uin=3EKZAJHLNKT37NSHKTIIU4L65M_GEXDA