Minuteman is the Fastest 3D Printer in 2024 (Episode X Season Final w/ Cliffhanger)

[@oaba201]

i think you need chilled air with less velocity. And it wont blow the plastic away. also a hight speed camera for troubleshooting.

Yeah, high-speed camera for sure!! :)

[@Bullfrogerwytsch]

Chilled air sounds good to me.

[@fizzpopbangcrack]

Peltier; hot end on the hotend - cold end cooling >:D

[@allthingsdestructive]

A vortex nozzle is what I would go for. Produces two streams of hot and cold air. Reject hot stream and only use cold stream

[@jaykop2611]

Maybe try a MQL Mist lubricator with Ethanol or water for evaporative cooling. I dont know how the Plastic behaves to that but could be worth a try

[@quattrocity9620]

Titling the hilarious intro as "Hilarious Intro" has to be the most German thing I've ever seen.

[@B0A2]

Fr😂

[@Roetz40]

😂

[@Will-kt5jk]

😂 the techno-babble phrasing was top-notch

[@blackpete]

Your first accidental Benchy is basically the printer spitting some filament on the plate, burping and then shouting BENCHY!

[@sheariley1910]

Hahahaha. This gave me a good chuckle.

[@MichaelArlt]

Kinda reminds me of a minion

[@pb223]

😂😂😂😂😂😂😂

[@CapnSlipp]

My Bambu printer does a fast Benchy every time what I'm printing loses adhesion from the build plate and the hotend creates a nice mess of filament blobs!

[@CapnSlipp]

There really needs to be some criteria for these Benchy world records. Like fitting certain tolerances, or even “does it float”. I can easily do the world's fastest Benchy with a 20mm nozzle with a record time of about 2 seconds. If there's no quality criteria, I win.

[@andypughtube]

The Turboencabulator intro, re-written to actually be true is brilliant. (And I loved "and a weight class typically reserved for forklifts")

[@802Garage]

I didn't realize for a minute until I heard side fumbling, bahahaha.

[@neverendingstudent]

I felt the Turboencabulator vibes right away! Good memories.

[@josuelservin]

Want to see another classic rewrite, search for: "New and Improved Metacarpus Encabulator!" It's a video by Ian Davis with another mind blowing mechanical marvel, I highly recommended the watch!

[@jodycwilliams]

Noticed this after my similar comment

[@FrenicX]

Yeah I was about to say this lol. Loved the encabulator spoof!

[@delta_n]

37:05 There could be a problem, fundamental to all bed slingers - plastic isn't infinitely stiff. When your build plate flies around at mach 3, the printed object starts bending and oscillating as it follows. I don't think it's the whole story here, but could be one of the causes.

[@bsod4144]

wouldnt it be possible to transition to as traditional setup by having the extruders and heaters stationary and a heated flexible tube that you move instead the whole assembly..like a hose

[@W8iHav2P]

​@@bsod4144I think you misunderstand the problem as being inherent to bed slingers and thus proposing an infinitely more complex system that would have the exact same issue. Fast movement changes = gforces, doesn't matter if you're moving the bed or the head

[@GregBadabinski]

​@@W8iHav2P Perhaps you could split the difference and move both? The relative motion & speed between the hotend and plate would be the same, but the acceleration experienced by either system would be halved. You would, of course, have to coordinate this motion and break the assumptions made by probably all 3D printer firmware, but that might be a way to go even faster.

[@meateaw]

@@W8iHav2P You can build the head out of metal, you can't build the benchy out of metal, because you are literally printing it out of plastic. Metal is stiffer than recently printed plastic, and can withstand acceleration better. And ... well, you don't need to worry about bed ahesion for a 3d print head, it can be permanently affixed to the motion system.

[@meateaw]

@@GregBadabinski If the other end of the pulleys was attached to the print head, (ie the print head and the bed are attached to the opposite end of each pulley) then the movement would be perfectly in time. THe difficulty is the weight of each is different and the stretch in the ropes wouldn't be identical.

[@emilcost8613]

You definitely need a high speed camera for this work. I think you will make lots of progress with the ability to see what's going on in ultra slow motion. Great work, and a facinating video. We are all loving this kind of research.

[@JSNCRD1]

Yep, this was my thoughts too. Really want to see that so bad.

[@wilkgr]

That intro is perfect. How many takes did it take to complete without bursting into laughter?

[@kurtmueller2089]

I was half expecting her to address the issue of hydrocoptic marzel vanes that these retro-encabulator based designs frequently have

[@darkmann12]

@@kurtmueller2089 it needs a SOC drawer!

[@pixobit5882]

@@kurtmueller2089 Rockwell Retro Encabulator :D

[@sammiller5509]

it's almost perfect, wuld have been better with Labcoat and Safety glasses 😢😂

[@Poebbelmann]

Outtakes 1:7:50

[@RepsyHD]

Imagine you're minding your own business, and suddenly a benchy flies past you, coming from the other side of the world because it lost grip on the bed

[@jkr9594]

Seeing him jump around between the absolute basics (like that one of the sides of an object being bad indicates asymmetric cooling) to absurdly advanced stuff, like the standing waves in the wires, is wildly entertaining.

[@UNgineering]

"We were so preoccupied with whether or not we could, we didn't stop to think if we should". Love it.

[@RossRadford]

Let's get this man a high speed camera. He's getting close to needing one for fine-tuning!

[@johnrobinson3642]

I love the "Retro-Encabulator" -style intro, that was so well done, just perfect :)

[@DoRC]

I'm not saying it's the problem you experienced but don't assume a vacuum sealed thing of filament is actually dry. I've had quite a few of them that were wet right out of the bag.

[@spayrex_]

Yep same experience here, next upgrade should be a filament dryer, otherwise the results will always change

[@strantor]

​@spayrex_ he has a filament dryer but apparently didn't use it.

[@Roetz40]

Thanks, good to know

[@spayrex_]

@@strantor i would guess he has one, but looking at the mounting option right now i would assume he wont be able to fit it there or maybe he also doesnt have one with space for 4 spools, either way i think we will see it in the next video

[@MarcChep]

Same here! I’ve had some terrible experience with filament right out of the bag without drying it first

[@KolMan2000]

World record if I’m correct is actually 1:53 held by Kirapatka. Video title is “new worlds fastest benchy 1:53” posted about 9 months ago. It uses a standard bedslinger with steppers rather than servos. So it’s both within the legal rules of speedboatrace and faster

[@Kirapatka]

thx bro

[@excitedbox5705]

The ringing sound of your base comes from sticktion flexing the "wings" as they rub. Remember you had print quality issues depending on orientation as well. The wings stick to the surface causing a local LAG in assumed position of the center and when the force overcomes the drag it releases, and you get a spring effect. When measuring the acceleration, remove the USB plug and solder on wires. The cable+plug has too much mass/resistance throwing off your measurement and platform balance. Ideally put a small accelerometer board in the base for active shaping. You definitely also need dampening rollers along all paths of your wire system for best results. Some kind of "straw" like sheath would be good but also add drag/wear while rollers will need many more spaced along both sides of all the sections per wire. Your cooling might be lacking air volume. Fast moving air does not remove as much air as the same volume moving slower. I would use larger syringes and increase the volume, while reducing velocity. Hotter plastic with a faster temperature drop is beneficial because it decreases viscosity and back pressure.

[@lorengrimes5293]

Yes. Its called chatter.

[@henrik.norberg]

It would be interesting to see it printing while filmed with a thermal camera. It should tell where it cools Edit: Btw, love this series of discovery, where you push the boundaries. And loved the intro.

[@emilcost8613]

Great suggestion. A high speed camera would also help a lot.

[@MoonWind32690]

High speed thermal is something likely near impossible to get your hands on sadly.

[@JJayzX]

@@MoonWind32690 I think they mean a combo of a thermal camera and high speed camera.

[@lucasthompson1650]

@@henrik.norberg Damn good idea!

[@lucasthompson1650]

@@MoonWind32690 Buying? Probably, but maybe renting? (or borrowing?) Mind you, I don’t think I’ve ever seen a thermal camera that does better than 60fps.

[@greatnate29]

Aerospace grade granite was where I lost it.

[@blueberrywilbur315]

It’s used in lots of manufacturing we had a similar setup at GM

[@greatnate29]

@blueberrywilbur315 oh it's like real? I was thinking why would something that needs to fly have some heavy material like granite in it but now that I'm thinking about it, the granite is probably used to make the parts, not to fly.

[@blueberrywilbur315]

@ As well testing situations where vibrations are bad. Definitely real

[@anotherriddle]

I lost it at "achieving accuracy only theoretical mathematicians could hope to measure" 😂pure gold

[@FlipLoLz]

Heavy materials not for flying 😅 Wait till you find out about counter weights being spent uranium.

[@julstr6303]

Consider using the Kalico klipper fork that implements mpc "model predictive control" for the temperature that should fix your temperature problems for your speed

[@its_dhazardous]

Dont use kalico use danger klipper

[@spectermk1]

@@its_dhazardous you do know, that danger klipper was renamed into kalico, do you?

[@its_dhazardous]

@spectermk1 WHAT i take a break from 3dp for 2mo and this is how i find out 💀💀💀 carry on, ignore my ignorance hahaha

[@youtubehandlesux]

​@@spectermk1My custom danger klipper fork got its commits all jumbled up because of this, gonna need to rebase 💀

[@av2245]

I am sure you have thought of this, but you should start with a speed where the print is perfect first. Then speed it up and troubleshoot anomalies as they appear until you cant solve any anomalies. There is a physical limit to how fast you can process materials. How fast you can print doesn't mean anything if the integrity and function of the printed part becomes useless.

[@Duckferd]

Seems pretty clear this is competing for one thing only: World SpeedBenchy records. There are tons of "quality at speed" projects out there (VzBot et al), but this thing is meant to push out a Benchy-shaped object as fast as possible without care for aesthetics or structure.

[@raiden9250]

Your completely missing the point of his videos . . .

[@fepethepenguin8287]

Yup. Point missed... Also i don't think the video maker has even thought of that. Ha Speed on the brain so much that working backwards, which is actually forward didn't cross his mind. Also. Hes probably printed so many thing b4 that he already knows what settings for a perfect print

[@robinc.5077]

When I had a really long bowden on a large delta 10 years ago, before pressure advance existed, what really made a difference was running at constant pressure. Since retracting/changing speed takes too long to make a meaningful difference you might as well have a constant flow and thus constant pressure at the nozzle. It works perfectly fine if your travel moves are a lot faster than the printing speed.

[@daliasprints9798]

At this pressure, you WILL ooze during unretracted travel if you don't have PA dynamically adjusting the advance. With PA, you can probably skip explicit retract.

[@CarloVaccariPlus]

The resonance graphs are so broad that input shaping is going to be severely rounding your corners at the insane accelerations you're running.

[@jkr9594]

True, but I doubt he really cares for this Projects. I don't think having micron-precision, or even millimeter-precision corners is really a concern here.

[@girrrrrrr2]

@@jkr9594 I feel like it should be part of it, to make the peak benchy, but i dont think it really matters yet. I think it can be an "aftershow" thing

[@NLRevZ]

Given the platform weight, the USB cable's mass also causes quite prominent deviations. He should DIY a very short extension cable to a stationary block just off one side of the bed with just some airwires to prevent this behaviour. It's just USB2 anyway.

[@mikishwagg]

0:30 lmfao “inefficiently crowned” 😂😂

[@MRX-ff4vy]

Didn’t she say „inofficially“?

[@dohabandit]

Finally!!! I was looking for a 3D printer that incorporates a dual phase micro-encabulator nozzle.

[@scorch855]

Super cool project and congrats on matching the WR. At these kind of speeds it would be cool to see someone ditch the motors entirely and attach the extruder or bed to some high excursion speaker drivers fed with an audio signal rather than g-code.

[@TheTechAdmin]

0:36 This kid Mark in highschool used to be a minute man machine. The girls called him minute Mark. Shame too, he was a good looking kid. Like having a suitcase packed with nowhere to go.

[@sixonthesideband6766]

That is absolutely incredible! Congratulations!

[@marlinunruh1273]

Impressive! I'm intrigued by the ability to keep the part on the build plate. How many Gs is the Benchy experiencing during infill with the abrupt 180-degree change in direction?

[@nexttonic6459]

Add thermal paste to the aluminium mount's for motors so you can move heat away from the stepper motors.

[@SuperUltimateLP]

Not necessary, the het condition is high enough dry. Youd only gain a advantage if the mount was abe to dissipate the heat aswell, this small thing would struggle to affect heat at all!

[@247printing]

Congrats 🎉 What a journey! Doesn’t look too bad, too 👌

[@whatyoudo9773]

I cant see anything bigger than a benchy surviving being shaken like a baby and not moving

[@ericlotze7724]

36:30 “You’re off the edge of the map mate, here there be monsters!”

[@NathanShantz]

This has got to be the Longest Video for the Shortest Benchy Print ever!!🤣

[@Thatdavemarsh]

Very interesting. 20:25 it probably comes up later in the video, but I’m thinking the resonance is also axial along the cord.

[@MakeKasprzak]

I was about to say this sounded like that rockwell joke video, but I wasnt sure until "side fumbling".

[@torstonvodesil6709]

Man i wasnt convined when you first started this project but i think this printer format has some real promise. This is awesome, always love some innovation in the space.

[@BRUXXUS]

I only use aerospace grade granite. 😅 Incredible work, and congratulations on getting this beast cookin!

[@Pacsuper7]

I love the humor and really respect the engineering exploration that is going into this project. Thanks for sharing! 😃

[@zirconprime]

Congrats. Wonderful following along in this series and I'm stoked to see what is next. Happy new year, and good luck.

[@whereareweliving9993]

The hilarious intro is actually amazing presentation! Im hooked.

[@629Justme]

You had me as I was playing a computer game while listening. Then I heard "side fumbling mitigation" and I caught what was going on. So I guess the Turbo Encabulator has made it into robotics and 3d printing. Cool. I recently saw a video that show it made it into space also. Encabulators will rule the world. I guess it will be in the new 4megameter high density micro mega macro miniature mini electronics also. Look out TSMC. Encabulators are coming for you.

[@629Justme]

Glad to find out its a real machine.

[@ReNeyer]

The intro is absolutely hilarious. Thank you for that!

[@paulo-kiefe]

What a great video! Thank you for the update; it was lovely to see. Also, I love that you use a dial caliper! 💪

[@VaWo13]

i think filming these prints in super slow motion should reveal a lot of its flaws in a way that is easy to work with

[@kyocreations7938]

Absolute madness, you’re making engineers all over the world very happy! well done And under a minute is insane ! It’s gonna take a lot to beat this record🎉🎉

[@Mouhfighter]

When seeing your extruder problem, i realized you may want to add a "rotation counter" on all for spools, you can zero them on every run or at each day and then it will allow you to see after multiple runs/tests if the extruders extrude differently. Maybe a simple, yet usefull information when continueing your troubleshoot. Besides that, awesome machine!

[@AngeEinstein]

A simple dot with a sharpie should work

[@Mouhfighter]

@AngeEinstein the idea is, that he doesnt hav eto pay 100% attention all the time, but sees if after some times the spools deviate from another. This is especially usefull if the skips may be irregular or very minor

[@AngeEinstein]

@@Mouhfighter you would see that with simple dots too. If one extruder differs from the other the dots which are aligned perfectly at the start wouldn't be after the print

[@beforebefore]

Consider a coaxial cooling sleeve around the print nozzel... it won't be blowing the material away from where it's printed. It only has to be hot where/when it contacts the previous layer to get adhesion.

[@lucasthompson1650]

I still think it should have a stationary bed, use those cables to move the extruder. Even input shaping and pressure advance aren't going to prevent your plastic model from flexing the way you're shaking it.

[@anderslagerqvist2642]

I agree but the coolest thing with this build is its uniqueness ... New ideas to tests

[@njdotson]

Yeah but it might not be possible to move the mass of an extruder that fast

[@lucasthompson1650]

@@njdotson with a granite table that heavy? I’m pretty sure it could be done (look at the speed vs mass of some of those SCARA or automotive assembly line robots). And given the “outside of the box” nature of the project, there might even still be ways nobody’s thought of yet to minimize exactly how much of it has to move … I mean, technically, just the nozzle and cooling, right?

[@lucasthompson1650]

@@anderslagerqvist2642 Totally, but I honestly don’t see this direction panning out without, like, GHz speed realtime sensor driven hardware motion shaping … which, I have to admit, would still be freaking cool, if a tad pricy.

[@wilkgr]

While I see what you mean, the extruder must be insanely heavy. On a different note, I wonder how a polar setup would fair...

[@JDTeevee]

how much will input shaping be effected by the increasing weight of the benchy being printed? With how light everything is in this setup, I'd imagine the benchy might affect the resonance of the setup slightly.

[@SuperUltimateLP]

Not much, on bed slingers we ignore this aswell. Granted there the mass of the bed is usually way higer then the printed part.

[@rainmannoodles]

Unless I’m mistaken, PrusaSlicer embeds IS values into the gcode on each individual layer so the printer can adjust the Y axis according to the weight (X axis is constant of course). I’m sure something similar should be possible with Klipper.

[@rbtoj]

I would be really cool to have a super slow motion video of the benchy being printed. :)

[@zacharygrace1245]

Hah, “minute man” was my nickname in high school (don’t ask why)

[@gcewing]

31:57 Congratulations, your "Benchy used in a nuclear weapon test" model print came out perfectly!

[@aviphysics]

@3:24 bring the lady back!!!! I don't want to listen to this beard guy talk.

[@hjaltesrensen8214]

I cant belive ive been wathing this series and now awaits another season of all these goodies. So glad to see that it actually proved itself and tied a world record, hope to see more crazy stuff in the future and keep up the good work

[@akaHarvesteR]

At 20:00, I think the reason you get higher vibrational readings is that the resonating string was in some way bleeding energy out of the system, and dampening the string makes that energy find its way back to the build platform. Maybe having off-board resonating elements could even be a good thing? 😅

[@trashpanda9433]

There’s a decent chance you’ll learn more about how to fix your problems running SLOW. Like 40-80mm/s. We know the ultimate values of the system, but not all together. You’re likely getting a mismatch in system location and plastic buildup.

[@anotherriddle]

This video is amazing and hilarious! 🤣 Love the progress and the humour 😁😎

[@drewrandall4194]

Not only is this a true testament to amazing speed and quality 3d benchy printing. It is also a testament to the power needle that is registering all that nom nom.

[@ohiohouston3560]

For your machine, the old manual method for tuning input shaping may be better. It uses results from practical tests rather than sensor measurements

[@aaronbaird1808]

Absolutely loved this video! I learned a ton from you today. You've also helped me eliminate some bad information I had learned. Love your work, keep it up!

[@Nachtschicht1]

"Look, grandma crocheted a benchy!" 😅 Sorry, I couldn't resist. There is for sure a great progress from the first benchies to the last. The greatest limiting factor is for sure the material that just doesn't harden fast enough. Also the inertia forces and thus possibly swinging of the suspended bed.

[@beforebefore]

This is the first time I've watched one of these videos, but have you considered using a Delta table positioning design (3 steppers), versus the old standard 2-axis that requires 4 steppers like you have now? Fewer steppers means less rotational mass, and less cable. Far better would be using just two small Linmot linear motors for direct drive positioning, get rid of all of the cables and their resonance problems. The accuracy and speed is amazing... with no rotational mass to acellerate.

[@artemyevtushenko8722]

Thank you for illustrating and demonstrating input shaping. Finally understand what is going on.

[@laurahaaima1436]

Sick! I was amazed by the speed of commercial printers now.. and now you guys are beating physics at another level by completely rethinking everything..

[@spendymcspendy]

So cool! I was thinking of building an epoxy granite framed 3D printer, but this is so much cooler! Thank you for the great content!

[@JavyFel]

Awesome work! I showed my kiddos, especially the part about taking notes 🙂 Keep going 🎉

[@3dpprofessor]

Don't think I didn't catch your Retro Encabulator energy. I caught it and appreciate it.

[@CheapFlashyLoris]

I can't believe I'm alive to see the day we've mitigated side-fumbling in machines small and affordable enough to fit in the home

[@adrutu]

first time aerospace quality granite was ever said out lout but here we are. great intro

[@youtubehandlesux]

You need to do input shaping to at least 200HZ, I think the peak might be higher than the 133HZ default.

[@WubbaLub]

I love the research and development, but I can’t imagine a good design ever being one that shakes the hell out of a recently melted object that constantly changes mass. More power to you for giving it a go.

[@jtcustomknives]

The thermal conductivity of this material is what’s limiting you with cooling. No matter how much air you blow on it the material will only only transfer the heat out and a precise rate. Water injection into the air stream might solve this.

[@jojoposter]

Hmm, mist cooling. Would be kinda funky if it worked

[@mbra2]

Or alcohol which might even help adhesion and evaporate quicker

[@TakeApartLab]

​@@mbra2 Acetone aswell

[@d4nnydj]

Richtig coole Serie 👍 Zeitlupen-Material wäre sehr interessant ... Evtl bis zu 4 Blickwinkel zur selben Zeit ... ( Ohne zu wissen, welchen Aufwand dies beinhaltet 🙈 ) Schöne Feiertage noch, guten Rutsch und alles Gute für das neue Jahr 🤘

[@martinw380]

for the cooler air: there is chillers for lowering the dew point, no need to add extra moisture.

[@noname-wv4ls]

@Kirapatka has held the speed benchy record for the last 9 months with a bench printed in 1:53 minute

[@Kirapatka]

thank u bro

[@oOWaschBaerOo]

you should put some work into ducting for the cooling, CFD simulations , getting laminar flow right below the nozzle tip, 360 degree cooling and or orienting the object so the beak gets the most cooling

[@Lord_of_ChaoSan]

That's a wild concept using the wire/rope, I've not seen a printer like that before. Neat concept, nice work! I wish I had a shop like yours- I've converted a couple of unused bedrooms + a closet, one is more like a walk-in closet where I store materials and the other is probably about 15x20ft where I keep my machines. In the future I've got one more room I can expand into but I'm trying to avoid using that one. A big open space like you have would be ideal. What you might be able to do to stop the wires from oscillating as much when finding resonance is to have a small speaker as close as possible to each spot that has problems- then use sound to cancel out the vibrations- the speakers would be programmed to play sound at the certain frequencies depending on the speed you're running- with some tuning I believe that could cancel/control those vibrations and if you use the right sound wave it should be barely audible, if at all. It's a very similar idea as to how noise-canceling headphones work. Just an idea!

[@DataLog]

I love the fact that side-fumbling was effectively prevented.

[@jauzon22]

I watched the full series, the finale was fantastic! Subscribed for season 2 ✌️

[@nattym.s6398]

very good series , i like your approach & im learning from it

[@BlackouTTProductions]

virtually eliminating side-fumbling is such a huge breakthrough in 3d print technology

[@kenniesdead]

Can you turn the motor vertical? so the drive pulleys would also be able to be used to to change the direction and remove the need for the small idle pulleys at the corners?

[@David-gk2ml]

Interesting. He'll probably say it's more effort than it's worth. Unless you count the inertia and friction of all the guide pullies. Getting rid of guide pullies would change the resonance of the system.

[@kenniesdead]

Yeah, that’s what I was thinking. To remove any “extra” parts would help.

[@CGW11]

_“That defies both logic and budget constraints.”_ 👍

[@YoDaPro]

Die wahren Profis erkannt man an randomly placed Klebeband Rollen inmitten von Messtasterständern ;D.

[@monkfry]

That was awesome and even more Hilarios @ 2X.👍

[@bareabarea3449]

Keep rockingan, great job! We're eager to see you pushing and finding the limits in everything, hopefully you'll drive innovations to Comercial 3dprinters

[@davefigures7999]

You should mount the extruder upside down to the table and move the bed upwards, that would probably help a lot. Upside down printing is actually something a bunch of people are doing, and you still get the granite flatness. You should also make the entire assembly smaller, those cables are too long to be able to beat that resonance. 😊

[@hikolanikola8775]

Me: "Whats your printing speed?" Roetz: "Mach 3"

First: what a marvel of engineering! Second: This needs slow motion camera. I’m quite sure there must be some effect of the plastic build flexing itself due to high g-forces.

[@soundmaster1966]

1:08:32 best Outro and Intro of the year, already. 😂👍Guten Rutsch und weiterhin viel Erfolg. o7 Ulf

[@SteveMoore71]

The intro/outro was amazing! Love it!!

[@RealNikolaj]

7:50 I believe you're right about it being resonance causing the sound. You could try to touch up the surface with a marker and see if grinding it again causes even removal of the marker to verify that it is not caused be an uneven plane.

[@jbrownson]

Excellent explanations and an awesome project, thanks!

[@jbrownson]

You don’t sound smudge

[@Danrchy]

That's AMAZING! You're a genius

[@TheLordNemesis]

Just a random idea I had when you talked about tried and proven systems: Have you considered using regular timing belts instead of strings? If you orient the motors upright with vertical belts, that could work. No idlers, just 270° around the motor pulley and then a spring to take the slack?

[@TheLordNemesis]

Might be prone to skipping teeth I imagine, especially when the spring is not tight enough. If the pulley is large enough the belt could be fixed to it. Or run it around the back like the current rope solution.

[@strantor]

​@TheLordNemesis I would expect pulleys as large as the ones he's using, to not skip easily. I mean that would be what, like a 80t or 100t GT2 pulley? I think the belts are a great idea.

[@noahe.8401]

he could also then add a tensioner pulley in the back portion that was already having free length issues. Would cut down on the free length, and give him better control over the tension of the belt

[@thomaskletzl6493]

timing belts have strings in them so they dont are so flexible. With belts you have backslash etc. Using strings is basicly deleting all these problems.

[@quentinroa2573]

Maybe you could add glass skates to the build plate mount to remove some resistance. Also, Switching to 2.85mm filament may also help, it would certainly take some of the stress put on the extruders.

[@mbra2]

A few suggestions: Try a different filament with lower heat capacity such as a high speed petg. This will make both heating and cooling faster. Look for filaments marketed as hyper or high speed that have lower viscosity at printing temperature. Don’t use an accelerometer to test input shaping. You’ll get some erroneous results due to the usb cable and the extra weight. Instead use the manual method described in the klipper docs where you print a ringing tower and measure the ringing with calipers and calculate the resonant frequency based on the printing speed. Your system is so light, the primary resonance is likely over 125 Hz and possibly over 200.

[@tomscerbulis]

Perhaps a nozzle/vent to provide something close to a ring of air to cool the filament might help with the sensitive nozzles, getting more uniform cooling and reducing the airflow velocity without compromising the mass flow.

[@jrhalabamacustoms5673]

Wonderful intro, not laughing face, congrats! That machine is insane, sounds like a industrial sewing machine.

[@Gin-ging]

the squeak seems to be just the harmonics of the part, i've seen similar with machined metal parts. i would suggest trying a dry graphite lube. something to consider the frequency correction graph will change as the weight or the platform / printed part gets heavier.

[@strantor]

I also recently had issues with plastic resonance. I 3d printed a "ballnut" (antiballnut) out of polymax PC. It made the most obnoxious screeching on the ballscrew. Graphite lube was my first answer too. I tried dusting the powder inside the nut and onto the screw, no change. I tried spraying dry graphite lube spray on the screw, no change. Dry moly lube, same. What ended up working was fluid silicone lube. Safe for plastics and actually works. But in this case might load down the printbed? Not sure.

[@bigbaderek1978]

He doesn’t want to sound smudge! That had me rofling 😂😂😂