SummaryThis is an idea for active cooling for PLA also it can hold 12mm bed leveling sensor. Idea is to make it compact and easy to adjust. 2x30mm fan can be used, one for cooling hot-end heat-shrink and another one to suck and blow on PLA. To use this system, make sure fan are installed right way. hot-end fan has to blow and blower fan have to suck the air. Print SettingsPrinter: customRafts: Doesn't MatterSupports: Doesn't MatterResolution: .2Infill: 80%Notes: main.stl might need support depend on your printer ability.