Slicer settings for a CPAP with Air Blower WS7040 setup.

[NikosSprocket]

I have upgraded my Voron 2.4r2 350 mm with an Air Blower WS7040/CPAP combination (more info. at Voron 2.4r2 350 mm getting serviced & updated aka "Rabbit Hole").

After some re-designing, I have a very, very powerful cooling system and if I use the "recommended" Klipper part fan settings and "standard" Slicer fan settings it probably blows the part off the bed!

At this moment, I had set up printer.cfg as follows to slow done the part fan:

 

#####################################################################
#     WS7040/CPAP Part Fan
#####################################################################
[fan]
pin: PA8
max_power: 0.5
shutdown_speed: 0 
cycle_time: 0.005 
hardware_pwm: False 
kick_start_time: 0.1
off_below: 0.0375

 

 

How you guys using CPAP with WS7040 turbo blowers set up your Klipper Parts fan and what fan settings are you using with your Slicer for PLA?

Cheers!

Nikos

[Xiar]

For my CPAP setup I just have it setup as a normal part cooling fan in the printer config. Max power of 1.0 and all. In slicer I set the fan speeds accordingly. I’ve found a max of 30% to be great for 90% of printing. 

[NikosSprocket]

Many thanks @Xiar for the info. It makes sense; I thought I was doing something wrong, as I have never seen and heard before that much air coming out of the parts fan!

I'm just getting my 2nd test print, Voron test cube, and I cranked it to 200% speed. The display shows almost steady 400mm/s with burst to 900 mm/s  but the cube overhangs, letters etc are the sharpest I have ever printed. That's nuts!

I guess too much air is never enough, paraphrasing Billy Idol. 

Edited May 31 by NikosSprocket