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Step 1: Reference Video
upgrade version not fully same with the video, but most same, you can as a reference.
Step 2: Full Design
Step 3: List
1. A set of acrylic cutting pieces
2. Allen screws M4x14 23
3. Locknuts M4 23
4. Flat head cross 3x30 screw 1
5.m3 ring nut 1
6.M3 lock nut 1
7.m3-m4 small cross sleeve 1
8.m4 Allen wrench 1