30x30x25 block

hello！
这是一个测试打印机打印尺寸的方块。
大小30x30x25mm，底部为圆形,下层为e3d（20x16mm）加热块，上层为cr（20x20mm）加热块。
切片时建议关闭水平扩展！
ok！

hello!
This is a square to test the printer's print size.
The size is 30x30x25mm, the bottom is circular, the lower layer is an e3d (20x16mm) heating block, and the upper layer is a cr (20x20mm) heating block.
It is recommended to turn off the horizontal expansion when slicing!
ok!