Ender 3 CPAP(S51) Biqu H2 V2s lite Printhead

Printhead for Ender 3 with:

• Biqu H2 V2s lite feeder
• E3D Volcano heatblock
• CPAP-like fan based on Xiaomi Roborock S51 blower
• BTT Microprobe
• BTT SFS 2.0 (WIP)

List of screws for assembly

• M2x8 x2 with nuts
• M3x6 x2
• M3x8 x2
• M3x10 x2
• M4x20 x2 or longer (or M3x16+ x2 for flexible fixation)

FAQ

Isn't the head too heavy?

I assume it weighs comparably or is lighter than BMG-direct heads. With a test printhead made of ABS and Klipper firmware at 1200 mm/s^2, no difference in quality compared to K3D EHP V1 was noticed.

The cooling nozzles are aimed directly at the extruder nozzle!

Yet somehow, CPAP at 60% power can't cool the heat block with the silicone thermal protection removed 🙃

Will it fit H2 and H2 V2s?

Most likely not, but I'm not a hundred percent sure. It's probable that on H2 the airflows could have impact the nozzle temperature.

Some of the air is blowing upwards!

I thought about making an additional element for printing with flex materials to seal the hole. However, the airflow moves in such a way that the blower starts to cool its own electronics. I can't say for sure how much it needs it, but most likely it will be beneficial when placing the printer in an enclosed thermal chamber.

I printed the version for installing BTT SFS and I have a couple of questions...

I made a slight mistake with its placement, and also my SFS for some reason does not correctly detect plastic inside it (probably because I lost the m2 screw from under that weird round thing...), so I'm a bit lazy to adjust it right now 👉👈 (initially, H2 and SFS were supposed to be installed without fittings and the filament was supposed to naturally bend into the feeder coming out of the filament motion sensor)

Get used in promo:

• Biqu H2 dimensional model (https://grabcad.com/library/biqu-h2-dimensional-model-1) by Dmitry Sorkin (https://grabcad.com/dmitry.sorkin-1)
• Hotend E3D Volcano (https://grabcad.com/library/hotend-e3d-volcano-1) by Pedro Vitor (https://grabcad.com/pedro.vitor-3)
• BTT MicroProbe (https://grabcad.com/library/btt-microprobe-1) by Miklós Héjjas (https://grabcad.com/miklos.hejjas-2)