I use these: https://www.amazon.com/Adjustable-Converter-Step-Down-Regulator-Stabilizer/dp/B081N6WWJS
Just instal it in-line with the wires going to the fan inside the control box, dial it to 12v using the handy-dandy display and the tiny screwdriver your printer came with, mount it somehow (I printed some spacers and used nuts and bolts through existing vent holes), and.... done.
Now you have a fair amount of 12v to do 12v stuff with.
edit: Cooling seems fine for me -- no clogs even when printing ABS at 255c -- and the v2 has plenty of power to spare for occasional odds and ends.
Yeah you can use PC fans. It takes a little more effort though. Since the voltage output from the printers motherboard is 24v. And most PC fans runs on 12v. So connecting a 12v fan to the 24v output on the motherboard will destroy the PC fan. So you need a Buck Converter, that steps down the output voltage to 12v.
But, there are also fans that runs on 24v, but they are not as common.
If my printer is still too loud after I’ve mounted the stock fan with double sided tape instead of the screws I will get 40mm Noctua 12v fans. And hook them up with the buck converters I linked. Cuz I’ve built countless computers using noctua fans, and know that they’re really quiet. Rather than buying a 24v no-name fan, just to find out that it’s as loud as the stock fans 😂 So the extra hassle with the buck converters is definitely worth it, at least for me 😊
I find that these are easier to work with as there's no soldering and no need for a multimeter: https://www.amazon.com/Adjustable-Converter-Step-Down-Regulator-Stabilizer/dp/B081N6WWJS
I have several of these so was hoping it would do the trick
https://www.amazon.co.uk/Adjustable-Converter-Regulator-Stabilizer-Voltmeter/dp/B081N6WWJS
Yes. I don't know what you mean with "into a step down" converter, but by wiring the output connectors of the power supply to a step-down converter you can get 9V on the output of the step-down converter. There are even ones with LED displays. But please be aware of the technical specifications of the buck converters. There is always a max current value.
Yep I forgot about that
Also:
4 Pieces Adjustable LM2596S DC-DC... https://www.amazon.com/dp/B081N6WWJS?ref=ppx_pop_mob_ap_share
I’ve only hooked up 1 and working good so far