Biqu B1 SE Plus Cooling Assembly - Hot end and Parts Cooling

prusaprinters

Having a hard time finding upgrades for the Biqu B1 SE Plus and wanting improved part and hot end cooling, I thought I would try to design my own.  Being a complete amateur with Fusion360, I know there are many aspects of this design that could be better, but so far it has worked well for me.  I have included the f3d file so please remix at will, I am excited to see what you all do with it.This bolts directly in place of the factory cover utilizing factory hardware and also accommodates the fixed block with the bowden connector in it.  This assembly does not interfere with the heatsink mount or strain gauge, so factory ABL is maintained.I originally chose to use Noctua fans for the sound reduction.  However, the Noctua 4020 fans are not available in 24v so I wired the part cooling fans in series and used a buck converter to drop the 24v to 12-14v for the main fan.  I added a mounting surface for a buck converter, which I just attached with 3M VHB tape.  I have since decided to try 24v fans, wired in parallel, for part cooling and there is a significant increase in sound but also cooling due to the increased air flow, static pressure and RPM with the 24v fans.I printed in ASA for thermal stability and used 100% infill.  Supports are needed and a little tricky to get right, but I found that “Adaptive layers” in Cura helps in reducing the need of supports and provides good results.  I used a standard layer height of 0.2mm with “Adaptive Layers Maximum Variation” of 0.08mm.Hardware:10x M3 x 6mm heat set brass inserts.M3 x 12-16mm - 4 - for mounting the part cooling ducts to the frame.3x 4020 fans - mounted using standard M5 fan screws.M5 fan screws - Used to mount fans and fan covers, usually come with fans, can purchase on Amazon.