dry box（干燥箱）

声明：部分零件基于阿文君的干燥箱3.0改造，网址：
Statement: Some parts are based on AWenJun drying tank 3.0 makeover, url:

https://www.bilibili.com/video/BV1nS4y1d7Cw

材料清单：4 x M8螺母，4 x M8锁紧螺母，2 x 608ZZ轴承，2 x 10mm M3自攻螺丝，90mm M8螺杆，密封盒。

Materials: 4 x M8 nut, 4 x M8 lock nut, 2 x 608ZZ bearings, 2 x 10mm M3 self-tapping screws, 90mm M8 through wire screw , 4L sealed box。