Why cooling fans are so hard, and some preliminary testing

[@maplobats]

WTF, why am I just finding this channel now? C'mon youtube algorithm gods, THIS is the stuff you should be recommending!

[@tablatronix]

Finally someone who knows wtf they are talking about with regards to fans!

[@potatojz38]

This dude knows what up with everything on a printer. He's super underated

[@Side85Winder]

@@potatojz38 i agree alex is goes well beyond the "use this dumb arse its the best". I think the tangent rambling throws some people off. They just want to be spoon feed the answer and not learn about x y and z to why its best.

[@hampuslundin4432]

The community needs Alex Kenis and his knowledge!

[@taylorsharp5928]

This is the type of research and experimentation I love to see. Just from a broad engineering perspective, I find this very useful. I have been disappointed with the performance of pretty much all the well known printable fan ducts, it seems like most of them are pretty much herp derped together by people with no real understanding of physics or fluid dynamics. To see these principles in action is great, I hope we see some improved and simplified duct designs from the community in the future.

[@WSS_the_OG]

Venturi tube "blew" my mind! Knew they worked, but had no idea by how much! Fannnntastic stuff man.

[@AM-pi7jy]

I would love to see the sequel to this. It's very interesting! Will you design the perfect cooler that will rule them all?

[@glabifrons]

First, I hope you feel better. I also seem to get sick on almost every vacation and major holiday. It looks like you've spent time in a machine shop (or you have an excellent intuition on the topic). :) You nailed it with your "herp-derp first try" on the Venturi nozzle. I've seen very similar designs (basic shape and ratio of openings) for air-blast nozzles (decades ago). It's awesome that you're looking at the Coanda effect as well as the Venturi effect. I can't wait to see the results! Not all blowers are noisy, just like not all axial fans are quiet. :) My Ender 3's stock board and power supply fan are infuriatingly loud (I can't believe people complain about the stepper noise when the fans are such screamers). What makes the board fan (and stock hotend fan) so loud (even louder than the bare fan) is the fact that the openings in the restrictive slots are too close to the blades making them buzz. Please check out some 4020 blowers to compare too. They seem to blow almost the same volume as the 5015 blowers, but are significantly quieter (and cheaper, and lighter). They also seem to flow quite well even at low speeds (I drive a 24V one with 12V to cool some Trinamic drivers). Another that I just got (but haven't designed around yet) is the 5020 blower, which amazed me in how quiet it is compared to the 5015. As a very crude test, I grabbed a 19.5V power supply (hey, it was handy and I already had an adapter I previously made for it) and powered a (24V) 5015 as a basis for comparison, felt the airflow and listened to the whine. I then switched to the (24V) 5020 and it was barely audible - my wife couldn't hear it from 6 feet away. It seems to have better airflow too, which makes sense due to it having an inlet on both sides and a larger outlet than the 5015. I wasn't going to plug my designs, but since you asked at the end for things to test, please check out my hot-end and part cooler designs for the Ender 3. They're not perfect (I don't have the math background you do), but I avoided (at least some) common faults like over-restricting at the nozzle. In fact my design allows you to swap out the nozzles quickly to test new shapes and sizes and I found that the first nozzles I designed, which work very well for the single-blower version, stall badly in the dual-blower version (so I provided significantly larger nozzles for that and have used the same ones ever since). Single and dual blower versions for the stock hotend: www.thingiverse.com/thing:3899683 Dual blower version for the MicroSwiss and clones: www.thingiverse.com/thing:3947323 Of course, "dual" and "single" refer to the part cooler part of the design, all three have a single 4010 blower fully ducted through the heatsink (as opposed to merely blowing *at* the heatsink with no outlet, which seems common). Also, I enclosed a 4020 for ducted inlet and outlet for cooling Trinamic drivers in a SKR v1.3 in an Anycubic Kossel delta printer. www.thingiverse.com/thing:4015280 Another tip: I've found the vast majority of the noise in these small blowers comes from the inlet, so if you shroud it properly, it can be made significantly quieter (I take advantage of that in another design, but I've plugged enough already). :) If you lived close, I'd drop some off for you to test with. Unfortunately, it looks like you're over 1,100 miles North of me.

[@IsaacPiera]

I'm designing my own printer and this video is pure gold. Thanks.

[@JasonLooseArrowAlso]

This was amazing. I am learning so much. I want smaller, quieter fans! Looking forward to the next fans installment!

[@karlfell3768]

Insight with attitude thrown in for good measure. Awesome content.

[@wangouthangout]

I can't stop watching these

[@sycoaniliz]

I'm so happy someone is doing this

[@Gengh13]

Awesome, finally we see someone working on this problem.

[@markopesevski]

Man is your content underrated... Thank you very much for putting the time into this!!! Hope you are having a great holiday season, illnesses aside. Keep it up!

[@KuriPuhh]

That was super usefull and educational. Some few months ago i was playing with the ventury cooling idea but hadn't much luck with it. Good that somebody talks about things that really matter.

[@grasshopperzx2]

Good stuff, Mr. Kenis. I approve of your master shredding technique of spreading knowledge, cheers.

[@Naomi-Wu]

This is fantastic- subscribed!

[@chloemcholoe3280]

Yes he makes awesome videos!

[@seanwieland9763]

💯💯💯

[@mvadu]

So many good theories and glimps of what to expect next, but no followup..hoping once your house situation is under control you get back to finishing this series.

[@andybarnett4060]

Amusing and informative - as always!

[@enrilopez]

Love this video, is there any update on it ?? More testing?? Better options to print?? Thank you

[@handdancin]

absolutely love the topic. great job exploring it too. youll probably get a ton of subscribers based on this vid, which you deserve

[@themarkymarkster]

Great work Alex, love your nerdiness!

[@kippie80]

I'm a mech eng and just getting into 3d printing. it is wierd how myopic this cottage industry is around fans. Not many engineers interested in this ... they'd be more into CNC, inj. mould, metal stamping etc. Great intro and application of incompressable fluids!

[@pjak2000]

"fudge factor coefficient" - just epic :D

[@jooilpark9304]

This video is informative, useful and enjoyable. This channel is full of valuable information.

[@dimitripapadopoulos5482]

Hi Alex, well done and an interesting topic. After a lot of testing for Bowden style mk10 hotend I went for a combination of 4010 radial fan + organic formed shrout.

[@terr0rhai]

This is so amazing! Already tried some things like „remote“ blowers with pc watercooling tubes to reduce weight on the hotend with good cooling. Worked pretty well but fans died like ants bcs of the high backpressure and so higher than stock rpm on full power. Need to get into that again.

[@m3chanist]

Berd air, try aquarium airt pumps, small diaphragm compressors basically made for that pressure.

[@ransombot]

Finally someone doing more testing than sticking a bowl of water under and saying yup this idea blows. Now I want to print a vortex tube shroud with the ventury effect to create infinite energy and cool the parts more better.

[@tyrantesmer6584]

I don't know what the heck I just watched and heard, but it all sounds interesting and worth a replay.

[@MrDynamik1]

I really enjoyed this, killer R&D work all the way. I will definitely be saving this for future reference.

[@jmtx.]

Awesome investigate. Looking forward to more Venturi-blower combo testing! Though there is such a thing as too strong where parts get blown off before they can cool.

[@christophergrove4876]

Yeah, but then you can run an efficient design slower for quieter operation.... Then sleep at night! 😉

[@circleofowls]

I was about to install Noctua 40x20s on my Ender 3 extruder and parts cooling nozzle but I think I'll wait to see the results from the rest of your testing. Very interesting results.

[@AlexKenis]

I'll be using the noctua 4020 for testing, as well as some cheaper ones, so yeah... stay tuned and see if the cheaper ones work out since $15 per fan is pretty expensive

[@vorpled]

@@AlexKenis Still tuned. How did it go? :-)

[@vorpled]

Checked out the Ender mod video and saw some updates. Thank you for all the work you are doing, it will be super beneficial in the end.

[@kakaworu]

Still waiting for a sequel of this great deaign guide. Hope you well Alex.

[@TheDgdimick]

Alex, thanks for making my day with another of your videos.

[@cthulpiss]

Maaaaan, I just love your videos :) I was waiting for "Venturi" entire time :P

[@dennisvanoevelen3532]

No follow up video has been made yet? Found it really interesting and am intrigued what other designs were coming

[@OdinBear0]

Hi Alex, Just wondering if you have any further updates on this video as it's been 8 months since you have published this one. You have some Serious Talent and I cannot believe that something "So" easy can be So much more than that.. The Ventui made a surprising difference. Awesome video.. 😎👍👍...

[@AlexKenis]

Mark Hudson I’m going to put out an Q and A soon (hopefully in the next few days) with updates on the state of everything. I have been dragging my feet on it because every time I try to get back into videos and testing, all the craziness gets crazier, but basically barring more riots or another COVID flare up here, I hope to finally get back on track.

[@simoncole3080]

Excellent, informative video and some useful data to be gleaned from it. Keep up the good work Alex, much appreciated.

[@kenlipper874]

I'm really enjoying the scientific approach you take in your ideos - looking forward to some final results and suggestions.

[@olafmarzocchi6194]

For info and suggestions about inlet vanes: link.springer.com/article/10.1007/s11630-017-0967-y and also "Aerodynamic Performance of Axial-Flow Fan Stage Operated at Nine Inlet Guide Vane Angles".

[@efnick96]

I would actually pay you to design some fan ducts for my printer. Although I am still learning 3d design and your video was definitely something I needed to watch. Great job

[@jirij]

Hey Alex, a few things that might help; 1) Computer fan manufacturers test the blade designs using smoke - if you happen to have some air humidifiers (those cheap things that turn water into smoke) and an "infinite barrier" a.k.a. a carboard box, it would visualize the speed/spread of the air. .. Or if you happen to smoke a lot ... 2) Noctua actually added some focusing fins to their fans in 2012 in the NF-F12 line (search youtube for "noctua F12 smoke"), there are some notches in them that could be worth investigating. 3) How would an aerospike-style design perform? :) As usual, keep up the good work!

[@AlexKenis]

Okay 1) yes, I have an ultrasonic humidifier that I'll be using for demonstrations because I was using incense/sage/hvac-smokers before and they can get messy and smelly 2) I won't cover fan blade design much since I don't think I can add much to what work hjas been done by the professionals, but I will be testing some noctua fans 3) i have tried a few aerospike/airblade designs, and they work best with compressed air, BUT i'll be trying them out with blowers to see if they are viable for 'more normal' setups

[@shadowcard6923]

The reduced sound comes from more mass and the fact that you have less turbulent air. Overall cool little things

[@hubertcumberdale8175]

I think the vanes must be preventing the airflow inside the tube (created by the inlet and outlet) from just spinning in place with the fan, which appears to be what happens when the fan is not working. Really interesting stuff man. Good job, this is probably my favorite video of yours so far. A+ ps it is PRIME-er not PRIM-er. no offense meant, I am just one of those annoying people.

[@kristian95iversen]

Is there ever gonna be a part two?

[@rods87175]

Another great video. It seems that noise is the common complaint among users of 3D printers. Stepper noise is all but eliminated with Trinamic drivers becoming so popular now. Fan noise remains and has not been solved by choices like the Noctua's due to the trade-off .... less noise usually means less flow & less cooling. I like your approach and would not have guessed that the difference in flow and pressure would be so great by adding the vanes on the outlet. I'm wondering if the venturi effect would actually also cool the air in addition to increasing the flow. I recall seeing industrial venturi coolers that used compressed air but would guess that the pressure would need to be higher than could be achieved with these small fans and blowers. It might be interesting to place a TC in the airflow with & without a venturi to see if there would be any cooling effect.

[@AlexKenis]

Yes, noctua are very quiet, but at a cost, so hopefully I can sort out where the tradeoff happens. Same for getting anything useful out of venturi effect at the low-ish velocity and pressures we have available in small fans... I would have thought it didn't work at all, but initial tests showed that it is possible, so hopefully I can figure out how much speed/pressure is needed to make it useful

[@GuilhermeRochaFast]

This is awesome! Didn't see the time pass, guess ima nerd but the presentation made it not boring, congrats!

[@SianaGearz]

Hey here's... like half an idea... The main challenge that part cooling fans have to overcome is pressure.... I had noticed that a few years ago when i first got my printer, and it didn't have a part cooling fan, and of course the first thing i did was to just grab a 40mm axial from my old computer parts bin and mount it on there. I quickly realized that narrow nozzles on one of these were a horrible idea, and a mild cone or none at all and just a well-chosen angle was better, but still not good enough, so a 5015 centrifugal was one of the first purchases. So when i was watching Big Clive tear down a silent piezo aquarium air pump i think in 2018, my first thought was, "wait, is this potentially a viable part cooling solution?" Now recently, i hear all these people building things like Hevort and Voron, some of them do the Berd-Air thing, which is... specifically a 12V/24V aquarium air pump. But it's the noisy kind. I looked again and those silent piezo ones are all mains voltage, which is somewhat unfortunate, and i'm not sure they have the performance either. Have you been thinking on evolving that kind of design?

[@hangtight71]

Really glad to see this video. Useful and detailed information. I'd be interested to see what you think of the objective and subjective performance of ducts I've designed around a nozzle geometry I spent a while tweaking using SimScale. They've been fairly popular, but if there are ways they could be improved then I'd really appreciate your input. Will you be trying to address the thorny issue of what actually constitutes good part cooling?

[@AlexKenis]

Thanks! Yes, there are a ton of parts cooling tests on youtube, but not many/any try to quantify performance and define 'good cooling', so I want to give it a try to see if any conclusions present themselves. I'll be happy to work your designs into the mix if you want to toss up a link for me.

[@hangtight71]

@@AlexKenis www.thingiverse.com/Hangtight/designs Take your pick. They all use the same nozzle geometry. I think I shall pay more attention to the hotend cooling in future. The effect of the downstream vanes for axial fans was really quite dramatic.

[@jetrenkel]

This channel is such a goldmine. Such good info!

[@martylawson1638]

Been rocking the Dii cooler for the Wanhoo i3 clones and re-brands like the Mono-price 3D printers. The ring design gives the same overhang performance in every print direction and does show some "air amplifier" effect as well. Also got some home-brew ring cooler designs I did for my Hictop D3 Hero extruder upgrade. They're wild guesses, but work pretty well. (need to get around to publishing them...)

[@reeceengineering3560]

One thing to think about here is that as you increase the Eflux (exhaust velocity) through nozzle restrictions you are decreasing the volume of air being pushed. So depending on the cooling situation this could be good or bad. When cooling one small specific area in open space its good. When cooling an enclosed area its probably bad.

[@nimanouri9420]

Thanks Alex, man great job. I can Simulate your models in CFD. But with my experience I think blower fan in terms of performance and quality of the print will be the best choice.

[@casykid]

I am really looking forward to the follow up video. This was really informative. I've seen your water-cooling video where you put the blowers almost directly to the hot end but I don't think I have seen them using the additional holes that can improve the airflow by using outside air as well. Is there a reason for why?

[@Willy_LGM]

Would love to see further explorations on the blower nozzle design, seems promising! Cheers

[@keyz182]

Have you looked at all at Berd Air type setups? They instantly lose in the noise category, but through the perforated circular nozzle part "seem" to offer good cooling. Would be good to see that "seem to" tested. Maybe even look at differences in pumps? Could a Berd Air style setup with the right intake/outlet work with radial fans, or does it need the pump?

[@m3chanist]

Its called the tusk fan shroud, a radial attached to a couple of berd style tubes either side of the nozzle. It defeats one of the primary benifits of the berd however, by aiding mass (the fan and shroud) back to your inertial mass.

[@JeffDM]

I had used vanes on fan intakes but never thought about doing them inside fan ducts like that. I made a really nice powerful duct that uses the coanda effect that let me do fantastic overhangs. I never thought about trying the venturi effect.

[@AlexKenis]

You have some cool vids there. I am about to post a video about the world's crappiest water cooling setup that i am using for testing, so you should get a laugh out of it at my expense considering the very pretty watercooling you set up

[@sethLV3d]

just subscribed. The intro just made me dig up my dinosaur of a guitar after 11 years. time to mod this guitar with 3d printed parts, and probably seriously practice instead of doodling. :D

[@ignasitrochut5511]

Hi! Some day you’ll release the Venturi adapters for the fans? Waiting to see more content like this

[@ALex-qc4lf]

Is there a follow up? I haven't found it Very interesting

[@christophergrove4876]

GREAT SUBJECT!!! Side topic: never ever buy a room fan with skinny, weird lookin' blades that have words like "vortex" or "blaster" in their names and look like a Ninja blender! The good, old-fashioned, smoooth, tear-drop shaped blades that look like they were designed in the 1930s seem to be the most efficient and quietest! On top of that just take the front, finger-protector screen off the front! Result... You can run the fan on #1 rather than #3 but still get a descent & quiet breeze. That is all! 😶

[@grogyan]

I chose a CFD optimised fan duct. Works really well

[@potatojz38]

I remember printing this 3 years ago when I started with my Anet a8. Such an eye sore with a huge 80mm fan on the carriage lol and it barely blew. Most of the air back flowed out the inlet of the fan. Test it out to see how even with a big fan, a design can make it useless. thing:2149198

[@vivaciencia9329]

i learned so much with this video, thanks!

[@infamousdtownm9385]

Diggin it! Wish there were many more people that were motivated to do something as interesting and informative. I get frustrated when I am trying to find the best most efficient ways to upgrade or make something and have zero knowledge on a subject. Thanks

[@madvelila]

High quality video!

[@npmrc]

That's amazing content right here! Thank you, sir!

[@ZOMBIEHEADSHOTKILLER]

i always have trouble getting good flow from cheap fans, this information should be good to help me get the most out of them, and others. Ive recently been working on water cooling for my hot ends as well, cant wait to see what ways ill learn to improve them from your next video. Mine is just some shrouds glued onto some v6 hotends ( with minimal modification), and with some vinyl medical air hose, and a windshield wiper pump. it cools both my hot ends in series, top to bottom. Im liking it alot so far, but the pump is louder than the whole printer. quieter pump is my next modification FOR SURE. waiting on shipping.

[@AlexKenis]

I have a vid coming out today showing the suuuuper crappy watercooling setup I have been using for testing. It's not pretty, but I wanted to establish the bare minimum so I could make something better later on. I have just used submersible aquarium/fountain pumps because they are quiet and seem to push enough water to be useful. this is the small one I used for testing that is ultra quiet and cost like $3 www.jtdcpump.com/wholesale-aquarium-submersible-pump-dc-wine-set-pump-ad010-1208d-giant-electric.html but I also have a stronger one that i'll link in the vid (it is a bit louder with a sortof hum/whine noise at higher voltages). There are hundreds of others that should work fine though

[@ZOMBIEHEADSHOTKILLER]

@@AlexKenis thanks for the info, ill check the video out for sure. sounds like mine, just used what i had around the house, will upgrade over time. I got 2 pumps from banggood coming, gonna choose the quieter one most likely.

[@generalleeloaded]

Great video!! Thanks for your time!

[@recurveninja]

Laminar flow is good for moving air, but bad for cooling. For something like a hotend fan, you WANT turbulent output from the fan because turbulent air bounces around and covers more surface area on the fins of the heatsink than laminar output would.

[@3d-drucksucht948]

Nice Video. Where i can find an STL for the Venturi Nozzle?

[@Heavyzito]

Hey, Alex! Great video! You should test those 40mm fan adapters for v6 hotends. I'm still searching for one that doesn't create backwards airflow. I might try designing one after this video, really great ideas.

[@jaro6985]

1:08 nano stepper or smart stepper, I've worked on a similar design. Great video :)

[@AlexKenis]

Yup. I have not seen much info on them and peopple ask me about it constantly, so I figured its about time to test

[@DRIX3D]

Thank yo for your research in improving our systems :) I bet that manufacturer will have an interested look to your work...

[@kimpanattoni]

Have you ever used any of these principles to modify a generic 20" box fan like those that many people use in their homes, and if so, have you 3D printed those parts?

[@nadir3D]

Thanks for this awesome content!

[@4zims]

Quality content

[@nwimpney]

I think all the reasons bicycles don't fall down are fairly well known. For some reason, people are just confused because there's multiple contributing forces, any one of which can be removed, and compensated for.

[@vangelis.gavalakis]

Thank you for this video! Great info.

[@nobooya]

I was wondering how the testing goes? I was looking at some designs at thingiverse, but I'm not really convinced if they really work well after this video :D. Most of them seem to be just very large and heavy to look "cool". Do you recommend anything for the ender 3 (pro)? I wanted to upgrade the fans as they are too laud for me. Already replaced two - PSU and motherboard, but I'm not sure which design I should go with for the hotend. At first glance the MinV2 cooling looked nice as it has even some CFD tests, but it runs on stock fans and it doesn't have any vanes for the hotend cooling (which might not me the problem as it can be printd separately). I don't have any experience in fluid dynamics to be able to judge the design objectively.

[@3sotErik]

I'm having a hard time finding a follow-up video. What is the best cooling ducts solution

[@gabiold]

Would be interesting to investigate how the part should be cooled for proper layer adhesion and brdiging quality. If you blow straigh to the print nozzle, it just cools the nozzle possibly decreasing it's efficiency, maybe the lifetime of the heater. Probably decreases layer adhesion as the plastic cools down to fast. If you blow from left and print in right direction the plastic spends lesser time under the cooling than if you print to left. If you blow using a two-ended duct left and right, or circularly all around the hotend, where the air will go? The print is as tall where the circular duct is, probably the air can only escape upwards. Maybe there should be an evacuation fan at the top of the carriage to define the direction of the flow. What effect it have on printing bridges? Too much flow blows away the string. Small flow doesn't cool it fast enough and it will sag. The thing I wrote above is more of a concern in printing bridges. The quaility of a bridge can depend in it's direction in the print if the cooling is asymmetric.

[@AlexKenis]

Yes, those are all things I want to investigate, because not many videos have even mentioned them. My traditional setup is two opposing fan ducts, slightly offset, to cause more turbulance and dwell-time over the printed part, but I have not done methodical testing to optimize it, so hopefully I can produce some good info when I do

[@darxtarrdesigns3877]

Why not use a small compressor that can be fitted anywhere on the printer and regulate the flow with a micro solenoids or micro RC servo motor? You could use copper tubing to direct air precisely to the nozzle (delivery to the hotend block would be via a bowden like tube), and a source of compressed air can be piped anywhere for any need. An extra benefit with a tank would be cooler air due to expansion...

[@spyder2782]

please some more videos like this on fan duct designs

[@tricky2k]

How-wever, if some day you happen to be sunning in up in Spain, beers are on me. Well, one. Ok ok, make it two

[@ronaldwitteman2134]

Great way to soup up a leaf blower.

[@DevilbyMoonlight]

fan-tastic job!

[@terapiu]

Man I'd love a follow up on this and maybe an stl of a well designed vane :p

[@alexjx1]

Very nice work! Thank you! One thing that I don't get yet is that, in terms of cooling, the volume should be the more important thing to optimize for. But the video is focused on pressure. My assumption is that, since the printed parts are not in a tunnel or something with the fan, so there will be a gap. So pressure is required to penetrate the gap for sending the airflow to the parts?

[@AlexKenis]

Hopefully I can make some tests to quantify what is important, but I mainly used pressure in this vid just because overcoming static and dynamic backpressure is important for forcing air through a duct, but 'mass flow' may be the better parameter... it will all depend on what works best for actual cooling, then we can optimize for that

[@olafmarzocchi6194]

I hope you'll test (even if only to show) how the Venturi works/doesn't work on axial fans

[@AlexKenis]

for sure! that is one of the first things I need to nail down since axial fans typically can't do enough pressure to get a good ratio for the venturi effect to be very useful, but im currently printing a bunch of variations to try out with 'whatever' test rig I end up making

[@MB-lh5kw]

How about using compressed air via an inter cooler this would give you focused air and cooling pulse using a proportional valve as much or as little as required

[@ZOMBIEHEADSHOTKILLER]

interesting idea

[@CDTsuiPo]

it's much like diffuser on the racer car, i had use this kind of design on my delta printer effector.

[@SianaGearz]

It's funny how similar fans and speaker drivers can be in some aspects. But also different.

[@AlexKenis]

It's true though, I was actually thinking the exact same thing last night when I was graphing some noise level numbers and trying to figure out standing pressure in a tube... it felt like designing a ported cabinet

[@Dave_the_Dave]

How about a noctua 4040 axial fan feeding inlet of a 5050 blower, running at a lower speed, with the herpderp venturi, add flow, and add quietness.

[@lotechgreg]

See AK vid, ... Like AK vid,... Watch AK vid,.... All happening ASAP. Looking forward to all your future vid's............... ROCK ON!!!!!!!!!!!!!!!!!!

[@spyder2782]

Awesome

[@markpupetx]

Good job!

[@ameliabuns4058]

Did you experiment more on this? I really liked this video :) the effect you showed for the blower fan is so weird! i was expecting air to leak out of the opening somehow! I'm gonna test my fans too and improve my printer's design xD tho my printer currently uses the stock v6 cooler. maybe i can add the little blade shaped thingies to the stock v6 heatsink shroud?

[@BGTech1]

I leaned more in this video than I’m learning in the physics class I’m in right now

[@joell439]

👍👍😎👍👍 - wow, what great info and content. Definitely deserves a subscription. On to more content now. Can't wait to see what you have up your sleeve. 😜