Suction Head for Zimpure on Prusa Mk3S

thingiverse

This is my first version of a suction head for the Zimpure system on the Prusa Mk3S. It has proven prone to melting due to the proximity to the hot end. I recommend using a very high temp material (PETG is not sufficient and will melt). I recommend checking out Version 2 if using PETG: https://www.thingiverse.com/thing:3490537 With the redesigned extruder head assembly on the Prusa Mk3S, the original Zimpure suction head no longer fit. I designed a new suction head in Fusion 360 to accommodate the limited space available on the Mk3S. The suction head is designed to be as close to the nozzle as possible. There is a 1mm gap between the nozzle and the bottom of the HotEnd. The bottom face of the nozzle is aligned with the PINDA probe. I recommend PETG or ABS with the proximity to the HotEnd. To help maintain the maximum cross section for airflow, I reduced the tip of the suction head to a single layer thickness. This was a challenging print and required a bit of cleanup. I used 100% infill which was excessive on the suction tube attach section and resulted in a bit of buildup of material. I would recommend reducing the infill in this area. The design includes three holes that share the Noctua fan fasteners. After installing, I determined that the fastener closest to the X axis was not necessary and I broke off the tab, leaving only the two fasteners further from the X axis. This eliminated the interference that the bolt would have caused with moving the X Axis to the full left position. To install the nozzle, I replaced the lower fan fastener with a M3x25 and 4 M3 washers. I also replaced the top fan fastener with a M3x16. The printer performs normally with the suction head installed and requires no additional modifications. I also recommend printing the "STLAccroche_tuyau.STL" on Zimpure's website under the MK3 section: https://www.zimple3d.com/zimpure/Prusa/mk3/ to help support the suction tube.