This Hotend could produce TWO 3D-Benchy's in ONE Minute! (Minuteman Episode 8)

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  • Опубліковано 23 лис 2024

КОМЕНТАРІ • 228

  • @Roetz40
    @Roetz40  13 годин тому +17

    Anyone got a good name for the hotend? Post them as a reply here! 🎉

  • @EricBliesener
    @EricBliesener 15 годин тому +131

    This is exactly the kind of ridiculous, non sensicle, unreasonable over engineering that inspires so many people to innovate and make awesome things. Please keep doing this!

  • @probablywrongagain2151
    @probablywrongagain2151 17 годин тому +37

    I love this project!! Looking so forward to the day of an actual run.

  • @MatrixRay19
    @MatrixRay19 15 годин тому +32

    About the temperature control loop:
    Danger Klipper has MPC as an option other than PID, which works just like how you described.

  • @polarbear2272
    @polarbear2272 14 годин тому +9

    Crazy idea for a crazy project: have you considered direct heating the block by shorting say 200a through the block at low voltage? Might be possible to control heating location by mapping resistance and should be very responsive.

    • @TakeApartLab
      @TakeApartLab 6 годин тому +1

      I was thinking the same, It would be epic.

    • @phlebas-uq6fv
      @phlebas-uq6fv 5 годин тому

      Surely somebody has tried using metal filled filament as the heating resistor by now right??!

  • @Mouhfighter
    @Mouhfighter 10 годин тому +22

    ok, lets face it, we have reached a pooint where ii have to write it, please load RGB colors and create a code that does mix different amounts for different colors....

    • @NathanBuildsRobots
      @NathanBuildsRobots 8 годин тому +6

      Yes excellent idea. RGBW
      Selectable colors and for highest flow rate it enters poop mode, when the filament comes out much faster and is brown 💩

    • @SuperPhilope
      @SuperPhilope 8 годин тому +5

      Wouldn't it need to be YMCK color?

    • @jimmyaveragetoes
      @jimmyaveragetoes 7 годин тому +1

      The pigments don’t mix well. You would just end up with a print that looks like different colors depending upon the direction you view the part from.

    • @Mouhfighter
      @Mouhfighter 5 годин тому

      @@jimmyaveragetoes pretty sure you can create a mixing chamber for the 4 extruders

    • @OctoFlare
      @OctoFlare 4 години тому +1

      @@SuperPhilopeCMYKW

  • @frollard
    @frollard 7 годин тому +3

    29:00 a random thought to a:b test it - bead blast 2 channels different amounts, leave one normal, polish one - then load different colours in each. Run 4 colours of filament, with the motors at their absolute peak (skipping); then do a cross section analysis of what comes out to see if they have different quantities.

  • @DanM2509
    @DanM2509 10 годин тому +5

    Brahma is a god with four heads, believed to have originated from the four Vedas. The name for the hot end

  • @keinschwein8467
    @keinschwein8467 11 годин тому +12

    You should definitely keep the name for the second heating stage sub assembly "Just the tip" (and the cooling assembly "Only from behind").
    (But we shouldn't get ahead of ourselves before we draw any cockclusions. SCNR)

  • @JJFX-
    @JJFX- 8 годин тому +2

    Not sure how well it'd work for the larger section but to polish some of my copper hotend parts I use a piece of TPU filament mounted in a rotary tool with a little compound. Of course that'd only work with both sides together. It's slow but moving up and down the path worked amazingly well.
    This is such a cool project. I have no idea if it'll actually work but I give you badassery score of 10.

  • @markfen88
    @markfen88 13 годин тому +27

    and no benchys. ive been bamboozled.

    • @fravier10001
      @fravier10001 11 годин тому +3

      I thought the same, but the title says that "he could print" not that he printed it.

    • @blackpete
      @blackpete 9 годин тому

      Bambu-zeld? 😂

    • @Jeralddoerr
      @Jeralddoerr 8 годин тому

      @markfen88 I knew it wasn't coming, so I just went to the end to make sure before I hoped for 27 min.

  • @CarloVaccariPlus
    @CarloVaccariPlus 13 годин тому +6

    I think if you just tapered the 2mm holes into 1mm wide slots before joining you could dramatically improve the heat transfer without ever running into what I call the "cht wall" where the unmelted filament reaches the splitter.

    • @Roetz40
      @Roetz40  13 годин тому +3

      Yes, that's an interesting thought. But that comes also with a very drastic and sudden change in melt velocity. (Twice actually). I have no idea how much trouble this is going to cause...

    • @CarloVaccariPlus
      @CarloVaccariPlus 11 годин тому +4

      ​@@Roetz40 Everything is so laminar regardless of surface finish that there's no issue with speed fluctuations in the melt pool. Also, if you *are* concerned with that, simply make the narrower slots deeper to maintain cross-sectional area.

    • @CarloVaccariPlus
      @CarloVaccariPlus 11 годин тому +1

      This slot design is used in the Nanoflow tungsten carbide nozzle.

  • @flipschwipp6572
    @flipschwipp6572 9 годин тому +3

    Next step: Input shaping for Hotend heater

  • @scythelord
    @scythelord 12 годин тому +5

    I see a LOT of moisture in that filament. All the bubbling out the hotend, especially around 1:09:40

  • @kingkasma4660
    @kingkasma4660 10 годин тому +4

    Its perfect to make an art deco style 3D Printer! :D

  • @dacharyzoo
    @dacharyzoo 6 годин тому +1

    Damn... I can barely find things to watch to keep my attention but I was mesmerized for this whole 77 minutes. Even at 1x speed. You have a delightful balance of masochism and intelligence to the effect of "I'm going to bang my head so hard and repeatedly against this problem that it simply will be solved, it is only a matter of time."
    This was the first video of yours I've watched, and it wasn't until the end when I saw your build stage that I recognized I would be unwise to bet against you printing a benchy in under a minute.

  • @eclsnowman
    @eclsnowman 15 годин тому +3

    So happy to see Martin and the guys at Bontech hooking you up with the best extruders out there. I have known Martin for many years. He's always done a lot to help people in more demanding applications. And as you said... if yours isn't a demanding application, whose is 🙂

  • @VicknairDoesThings
    @VicknairDoesThings 15 годин тому +5

    46:56 “…this is pretty much a complete unit.” One may even say it’s an Absolute Unit 😂😂😂

    • @BRUXXUS
      @BRUXXUS 10 годин тому

      I love this idea for the name!

  • @methlonstorm2027
    @methlonstorm2027 11 годин тому +2

    what i dont get with direct extruders is why use contact wheels when you could get a better grip over a longer area using a track/belt system to grip the filament from both sides would give huge friction without damaging the filament any way super impressive work. i think you have a solid theory on surface melt look forward to see the results. thanks

  • @802Garage
    @802Garage Годину тому

    Ooooooh so excited for a NeedItMakeIt collab of some kind! Love Mike's videos.
    It's crazy to watch the extruding filament shake when a motor skips! Pressure must be huge.
    Super glad you are sticking with this and I loved the long detailed video. Keep at it!

  • @wreckexplorer
    @wreckexplorer 13 годин тому +6

    Hello Jan, love your content 👍🏻
    A little "off topic" but is it possible to do a test mixing the filament with this model and create different colors (RGB) while printing?
    Very curious about this.... And could be a gamechanger...🤓🍻

    • @Roetz40
      @Roetz40  13 годин тому +6

      I don't plan on going RGB or anything but we will definitely get some color going on in the next prints. ;)

  • @erickong9
    @erickong9 12 годин тому +4

    Possible to feed RGBW or RGBK filaments with different flow rate to mix out all colors?

    • @BRUXXUS
      @BRUXXUS 10 годин тому +1

      I don't see why not! I would be interested in just seeing what it would look like with 4 colors all at once! :)

    • @bobbob0507
      @bobbob0507 2 години тому

      Good idea, the correct colors would be CMYK

  • @nathangek
    @nathangek 9 годин тому +1

    Would you be able to do CMYK color mixing with this if you had some sort of "rifling" in the final combined path?

    • @asusplayer_
      @asusplayer_ 5 годин тому

      Wouldn't you also need a 'base' white color? CMYK also depends on mixing with white, but yeah at least in theory this could work

  • @evren.builds
    @evren.builds 15 годин тому +1

    This exceeded my expectations! I love how you're making the impossible possible step by step
    I was also thinking it would be amazing to be able to lap the channels via *abrasive* *flow* *machining*
    Can be done with a hydraulic press.
    looking forwards to the print!

  • @SarahKchannel
    @SarahKchannel 15 годин тому +3

    31:40 thought question about the surface finish - cant wait to see the results. One hand hand, having a rough surface increases surface area, yet maybe less contact area for un-molten filament. On the other hand I see nothing wrong with your approach and argument either.

  • @simon021
    @simon021 3 години тому +1

    with 17 grams of moving mass, do you anticipate having to dynamically adjust the speed/accel as the build plate gets nearly 50% heavier as the benchy is deposited? This is such a rad project. Those spools are ZOOOOOMIN!!

  • @JohnHansknecht
    @JohnHansknecht 12 годин тому +1

    Nozzles should be designed with a bevel on the end to match a bevel on the hot end, similar to a swagelok fitting that can handle 20,000+ psi without leaking.

  • @jaykop2611
    @jaykop2611 12 годин тому +3

    Theoretisch könnte sich das Fielament beim Polierten Port den leichtesten Weg ja aussuchen. Die harte Seele muss bei der groben Oberfläche aber an der gerade so plastifizierten Randschicht gleiten was am Ende ja mehr Reibung bedeuten würde.
    Stick Slip gibt es ja eher bei festen Gleitflächen. Bei Zähflüssigen Flüssigkeiten spielt eher Wandreibung eine Rolle in der die Flüssigkeit am Rand fast "steht" und zur Leitungsmitte dann an Geschwindigkeit zunimmt.
    Damit wäre eine schnelle Plastifizierung Key...aber das ist mit diesem Juwel kein Problem bzw kaum zu verbessern... Respekt für die Konstruktion und Fertigung!
    Am Ende denke ich macht es aber warscheinlich keinen merkbaren Unterschied ob Poliert oder Sandgestrahlt.

    • @blackpete
      @blackpete 9 годин тому

      Ich würde tippen, dass die rauhe Oberfläche turbulenten Fluss ermöglicht. Das würde eine bessere Durchmischung des Filaments und schnellere Erhitzung begünstigen. Fluiddynamik ist jetzt nicht mein Gebiet, kann daher auch falsch liegen.

  • @og.StudMuffin
    @og.StudMuffin 4 години тому +1

    Have you thought about using warm-hot filament spools to reduce the amount of energy needed to melt it once it gets to the hotend? Maybe a silicone sock as well.

  • @jimka385
    @jimka385 12 годин тому +2

    Need to tune those retraction settings! :P

  • @iFilipis
    @iFilipis 13 годин тому +2

    This extruder looks straight out of injection molding machine. I wonder what kind of pressure it can make

  • @blackpete
    @blackpete 9 годин тому +1

    Regarding the heat drop problem, would it be possible to have multiple sensors at multiple locations, averaging them or using the lowest, median or what works best?

  • @Hiltomatt
    @Hiltomatt 10 годин тому +2

    10g extrusion in 60seconds. Fast and the Furious popped into mind. Going to need some overnight parts from Japan.😂

    • @blackpete
      @blackpete 9 годин тому +1

      Nope. In 30 secs. That's more like topgun on speed.

  • @paul_devo
    @paul_devo 11 годин тому +1

    Well done, no leaks!!’
    Don’t group the ptfe tubes together that the top, you’re adding resistance

  • @coorexz
    @coorexz 11 годин тому +1

    All I could think of at the 41:05-mark is, that's an LGX Hydra taking form.

  • @RemiRafael
    @RemiRafael 4 години тому

    Concerning the air cooling system since you plan to have a limited flow with pressurized air it could be interesting to have a conical nozzle with the outlet being thinner than the body. This should force the air to se a large variation of pressure when exiting the nozzle and loosing a few degrees at the same time. With conical nozzles, the change in pressure takes place mostly when entering the nozzle (at the bottleneck) and the air may heat up again in contact of the nozzle. It may not worth the pain of finding/making conical nozzles though...

  • @roboman2444
    @roboman2444 Годину тому

    Would "preheating" the filament before the extruder help at all? To 50*c or so, below the glass transition temp.
    Could probably do this with heated spool containers and the PTFE tube running all the way to them, maybe with an insulating layer around it. Bonus is it would help dry the filament out too.

  • @qanoz8020
    @qanoz8020 15 годин тому

    I love this project so much, is is so innovative compared to the usual route to getting a fast benchy. I am now building my second custom printer to print fast thanks to you

  • @heyrpe
    @heyrpe 15 годин тому +1

    Have you looked into more detailed heater control in klipper? It looks like you have a couple of heaters in the big block, that you just control as one in the context of a bed heater. Klipper should be able to control a bunch of separate heaters, you could set them up all separately. You would need to drill a separate hole for each heater and install a thermocouple. In clipper you could then set them up as extruders oder other types of heaters. In the slicer you would just add a couple of commands to set them to the correct temperature.

  • @Flo_3D
    @Flo_3D 9 годин тому +1

    Das ist genau der Scheiss', auf den ich Bock hab'!

  • @controlflow89
    @controlflow89 16 годин тому +3

    This hotend looks TOTALLY EPIC!!!

  • @mihalydozsa2254
    @mihalydozsa2254 12 годин тому +3

    You can use it for injection molding too :D

    • @BRUXXUS
      @BRUXXUS 10 годин тому +2

      That's what I was thinking. 🤣

  • @ucdwino
    @ucdwino 4 години тому

    Love everything you are doing. That said.. you asked for feedback on finishing.. and I think the polishing is a mistake for two reasons … 1) I don’t think you want the outside or any part of the filament being left behind and staying in the hotend hot for any longer than necessary lest the plastic start to break down by heat. It would be better for everything to be pushed through by the filament behind it so you have total turnover of the filament in there.. 2) I think it’s not crazy to assume you might want to clean out the extruder without disassembling it.. and the rough surface will make any cleaning procedure pretty hard.
    Minor points.. but love what you are doing in general and am watching everything with great interest.

  • @BRUXXUS
    @BRUXXUS 10 годин тому

    Spectacular work! Seeing melted filament blasting out like a firehose is wild!

  • @Markusfried78
    @Markusfried78 13 годин тому +4

    Love it!! Will die swell not be a Problem to get a precise benchy shape?

    • @Roetz40
      @Roetz40  13 годин тому +3

      We'll see. If it's becoming a problem we have to find a sweet spot between back pressure and a longer nozzle zone. ;)

    • @Markusfried78
      @Markusfried78 13 годин тому +1

      @ looking forward to it! :)

  • @rlbrlb5109
    @rlbrlb5109 3 години тому

    What about using the 3mm filament instead, that way you only have to use 2 spools maybe. Or some sort of pellet system that could feed massive amounts of plastic. Although that maybe more complicated.

  • @Mefistofy
    @Mefistofy 34 хвилини тому

    Ideally you have an additional input in your control loop function: The reported flow rate. This way you can have a dependence of the heating power on the expected flow.
    Something like f(Td, Dm), where Td is the temperature difference (target - measured) and Dm (is the expected flow, as reported by the control software).
    I am not entirely sure if you can simply use two or 3 PID loops, depending if the two variables are independent: 2 if they are, otherwise 3 (upper tri-diagonal matrix). You would basically build an estimator of the expected temperature, given two inputs. If you want to go full banana, this could easily be done with machine learning but I'd personally prefer classic control theory. The devil obviously lies in the detail: tuning 3 PIDs might be difficult.

  • @802Garage
    @802Garage Годину тому

    BTW the extruder hotend combo now looks like a mega weapon from a mecha anime and the color of the block after heating is phenomenal.

  • @bunkie2100
    @bunkie2100 9 годин тому

    Just before you said “I’m not a native speaker”, I was thinking about how well you were explaining your reasons for the differences in finishes along the path of the filament!

  • @jamieclarke321
    @jamieclarke321 16 годин тому +4

    10/10 if it looks good it performs good

    • @AwesomeSaussage
      @AwesomeSaussage 15 годин тому +1

      I would say even 20/20!

    • @blackpete
      @blackpete 9 годин тому

      Looks and performs... GOOD? 😂😂😂

  • @TheFutureIsEloi
    @TheFutureIsEloi 11 годин тому +1

    Ah, The Bulldog. Now I understand...

  • @klave8511
    @klave8511 5 годин тому

    Great work, very impressive design. Why do you split the filament to increase the area that makes contact with filament? The centre is harder. Wouldn’t it be better to make the channel wider but not as deep to increase the contact area? Also, is copper the best material in terms of surface erosion over time, especially at the high temperatures you want to reach. I suppose the exposed parts can be plated if necessary.

  • @macrumpton
    @macrumpton 9 годин тому

    I heard yesterday that there is a conductive filament. I wonder if you could heat it by running a current through it?

  • @machinaexmente2729
    @machinaexmente2729 10 годин тому +1

    This is the stuff man.

  • @BTom16
    @BTom16 10 годин тому

    That is absolutely wild. Impressive work. Congratulations. ❤

  • @karlosss1868
    @karlosss1868 7 годин тому

    LOL... Thats insane. Part cooling will be an issue so looking forward to that chapter.

  • @GuediRawstyle
    @GuediRawstyle 12 годин тому

    Ich möchte hier mal deine Lesezeichenleiste erwähnen. Nicht das ich neugierig wäre aber als mir 3D Pimmel aufgefallen ist musste ich erstmal lachen 😂.
    Trotz allem hat mich alles umgehauen wie viel arbeit du in allem gesteckt hast und was dabei heraus kam.
    Klasse Video 💪🏻

  • @chovavmordechai
    @chovavmordechai 13 годин тому

    Great video! It felt like 30 minutes. Can't fault a single thing. Waiting for the next video! Keep them long.

  • @ScienceMessiah
    @ScienceMessiah 12 годин тому

    Nice project.
    However, it's not about pushing force, what's important is that you get the plastic to temperature quickly.
    The steppers skipping steps is because it's trying to push unmelted plastic.
    You can see it's getting too cold when the extruded plastic expands and looks like sausage.
    But I like your attitude. Just trying stuff no one else tried before.
    Way to go.
    Viele Grüße

  • @ucdwino
    @ucdwino 3 години тому

    Would love to see what happens when you have two or four different color filaments loaded… if it’s laminar you might get really cool effects

  • @henrivanderriet3895
    @henrivanderriet3895 15 годин тому

    Is that fumes or steam coming off the extruded filament?
    Asking because the filament seems to expand at the high flow.

  • @LetsJeep
    @LetsJeep 6 годин тому

    What motion system will it take to throw that weight around to match that flow rate?

  • @charlesurrea1451
    @charlesurrea1451 7 годин тому

    Forcing paste through the journals would give you a proper polish.

  • @bspyder4310
    @bspyder4310 2 години тому

    Would you get any benefits if you cool the shop air

  • @3D_Printing
    @3D_Printing 7 годин тому

    29:37 I've heard there are some nozzles which have an anti-stick coating

  • @omranello
    @omranello Годину тому

    this is amazing ... well done mate

  • @andrewmalaty8
    @andrewmalaty8 6 годин тому

    one way to visualize the laminarity would be to put 4 different colors in there

  • @kingkasma4660
    @kingkasma4660 10 годин тому

    You can maybe use leather for the copper polish

  • @mrDarktrooper
    @mrDarktrooper 8 годин тому

    if it doesn't work as a 3d printer, I'm sure it would work well for injection molding.

  • @fravier10001
    @fravier10001 11 годин тому +1

    It is an absolute monstrosity, I love it.

  • @guitarchitectural
    @guitarchitectural 3 години тому

    What I don't understand is... Will the layers even adhere if it's that fast?

  • @henninghoefer
    @henninghoefer 7 годин тому

    What you should be doing with it? You should definitely polish the front to a mirror 🤩

  • @Nevir202
    @Nevir202 10 годин тому

    42:15 looks like some crazy motorcycle W engine configuration lol

  • @platin2148
    @platin2148 10 годин тому

    Possible to Diamond coat the inner pipes?

  • @berndverschuren9308
    @berndverschuren9308 6 годин тому

    Ich denke mir mal, da deine Software in deutsch war, dass du deutsch sprichst. Da dein Heizblock sehr groß und aus Kupfer ist, wird er auch nach außen viel Wärme abstrahlen. Hast du schon mal darübernachgedacht den Kupferkörper außen zu isolieren? Wegen der Temperatur würde ich dir Keramikfasermaterial aus dem Industrieofenbau empfehlen. Das Zeug hat hervorragende Isolationseigenschaften bei Temperaturen bis über 1000°C.

  • @paolopace10
    @paolopace10 10 годин тому

    use klipper danger , has another option thats not pid and has filament density option

  • @KD0AFK33
    @KD0AFK33 9 годин тому

    I noticed the plate that said The Bulldog on it. Is that a plate from a bar?

  • @iopfarmer
    @iopfarmer 12 годин тому +1

    Isolation on the big bloc?

  • @iaa66
    @iaa66 10 годин тому

    Why don't you try ABS filament?
    It has a better thermal conductivity

  • @leaftye
    @leaftye 2 години тому

    That's nuts! No seriously, look at all those nuts.

  • @methlonstorm2027
    @methlonstorm2027 11 годин тому

    oh and for a name its Frankenstruder cause that monster is built up from so many different parts :)

  • @phlebas-uq6fv
    @phlebas-uq6fv 5 годин тому

    Borrow a thermal camera and record your hot end running. I bet you’ll be able to see the flow dynamics - that copper isn’t that thick, and modern $200 thermal cameras pickup really small temperature changes.

  • @KnowArt
    @KnowArt 15 годин тому

    awesome stuff

  • @Laborchet
    @Laborchet 13 годин тому

    Let’s gooo!!! 75 min of content hell yeah!!

  • @Bisaw37
    @Bisaw37 3 години тому

    21:47 what was the reason why a CHT nozzle is a bad idea? You never answered that question and I am very curious as to why.

  • @max_bro34
    @max_bro34 14 годин тому

    Servus Jan! Welche CAM Software benutzt du? Sieht aus wie etwas von Autodesk

  • @24Tigger24
    @24Tigger24 8 годин тому

    1:04:24 what are you looking at on Etsy?

  • @UnfollowWill
    @UnfollowWill 15 годин тому +1

    Subbed based on title lmaoo

  • @apenaslink
    @apenaslink 13 годин тому

    At this point a water jet, underwater or cooled air would prob be better for cooling.

  • @DerEbi84
    @DerEbi84 11 годин тому

    Würde ein größerer Filament Durchmesser (zB. 2,85) mit solch einem Setup mehr Flow verursachen?

  • @ReNeyer
    @ReNeyer 12 годин тому

    Love the Bulldog tray to catch filament and the scale... Dont build anything with this, please...

  • @captianmorgan7627
    @captianmorgan7627 12 годин тому

    25:55 Tiny quibble. What you have is a hypothesis, not a theory.

  • @thomaskletzl6493
    @thomaskletzl6493 16 годин тому

    i would probably dosnt do anything for finishing because im lazy

  • @aliasjones3156
    @aliasjones3156 15 годин тому

    This loocs really cool, but I can see one big hurble for you to overcome s soon as you really wont to go for a even remotely dimensionally akurat print.
    In your designe the diameter is really high just befor the nosel itself end has ohnly a vary short section of you 0.5mm diameter. This leads to a springback of the jst extruded material (this normally also happens with more normel printspeeds), In your case this seams to be pshed to the extream (like most other things of the designe).
    It locks to me that you would need a less steep transition from full diateter to final nozel.

    • @thomaskletzl6493
      @thomaskletzl6493 15 годин тому

      but isnt that a good thing if its consistent? you have basicly a bigger nozzle while beeing in the rulls

  • @holyger4147
    @holyger4147 12 годин тому

    use thermal paste for the hotendheater

  • @NathanBuildsRobots
    @NathanBuildsRobots 8 годин тому

    Looks good, I’ll take 4 😀

    • @Roetz40
      @Roetz40  8 годин тому

      :) would look dope on your machine!
      But trust me, you don't want a single printer with 16 spools of filament going in. Speaking of experience here... :P

    • @David-gk2ml
      @David-gk2ml 6 годин тому

      you'd need 5, one more to connect the 4 together

  • @docbrown172
    @docbrown172 14 годин тому

    Immediately subscribed lol

  • @gingerflow5594
    @gingerflow5594 11 годин тому

    Respekt was du da machst richtig geil aber kontrollier mal die Druckspeicherblase deiner Maschine , wird leer sein =D

    • @Roetz40
      @Roetz40  10 годин тому +1

      Richtig ;) Baustelle 2169

    • @gingerflow5594
      @gingerflow5594 10 годин тому

      @Roetz40 kann man bei einer netten Lkw Werkstatt aufüllen lassen

  • @hanswurstusbrachialus5213
    @hanswurstusbrachialus5213 14 годин тому

    Sieht eher aus wie ein W4 Mopedmotor :D

  • @DiomedesDominguez
    @DiomedesDominguez 10 годин тому

    5:30 be careful of using that splitting method, it's under a patent in US

    • @Roetz40
      @Roetz40  10 годин тому

      I'm not in the US and I don't intend on making any money out of this. I don't care for parents in that regard. But thanks for mentioning ;)