cooler for CR2020 with rlf35-8/14n

专为CR2020设计，风扇为rlf35-8/14n，出风口风向对准打印制品和喷嘴下方，加热块需要跳转180度摆放，以获得最佳位置。（其实是因为市售的硅胶套都只能这么装）
PS：我暂时是使用PLA印刷，稍后我会试试ABS

Designed for the CR2020, the fan is rlf35-8/14n, the air outlet is aligned with the printed product and under the nozzle, and the heating block needs to be jumped 180 degrees to get the best position.
PS：I am using PLA printing for the time being, I will try ABS later.