3D Printed Stackable PLANETARY GEARBOX - Unlimited Gear Ratio

The first 1000 people to use the link will get a free trial of Skillshare Premium Membership: skl.sh/letspri...
SEE THIS GEARBOX IN USE: • 3D Printed RC Tractor/...
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MY PATREON PAGE: / letsprintyt
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This planetary gearbox is designed specially to be easy to build and print, soo everyone can build. AND 3D PRINTING FILES ARE FREE: thangs.com/Let...
If u going to build this, then please send me a picture of the INSTAGRAM, I really love to see how people build my designs.
This gearbox has practical use in the real world for sure, and probably even in RC vehicles. Probably u see this gearbox in this channel more.
RC Tank video: • 3D Printed RC TANK - W...
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775 DC motor: ali.ski/CJuTrg
Square nuts (M4x8x2): ali.ski/A1Sym
Bearings (624zz): www.banggood.c...
M4 setscrews: ali.ski/WMx6dL
Battery: www.banggood.c...
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Storage box on my table: cults3d.com/en...
Name sign on my table: • 3D Printed Name Sign W...
Facebook: www. lets...
Instagram: / letsprintyoutube

[@TexusNoe365247]

When you print with PETG, be sure to increase the infill. Using different infill patterns will also yield better results too.

[@3DRC-707]

Yes absolutely.

[@Iron_Lion_Of_Zion]

Also, if u use matrix combining, pre infill stage, u will see 45-50% increase in strength, with approx 15.5 & 17.78% less material used, which on bigger prints all adds up.

[@msworkshop522]

Yes, until 40 % there are benefits. Also maximizing the wall lines will give its maximum strength, example with most common settings for every 1 cm2 of item use a setting about 12 wall lines. Also run the hot-end hotter than usual to achieve better bonding. Good video I enjoyed it.

[@snorttroll4379]

can one remelt or anneal the thing? sintering

[@martylawson1638]

Nice gearbox! Needs an output stage with output bearings and a overload clutch. (maybe some mounting holes too?) The output bearings are to support overhanging loads, and the overload clutch will make the gear-box bomb proof by slipping before anything breaks. I've made overload clutches both with spring loaded friction clutches and detent mechanisms.

[@haipingcao2212_.]

It looks like a bee

[@josephshubin8465]

An awesome video like always. Printing the sun gear perpendicular to the force direction will greatly increase strength. What I mean is print the sun gear in two parts (length-wise, perpendicular to the gear teeth). The plastic is failing due to the torsional force being in the same direction as the print layers. The parts will be a lot stronger.

[@Guffy1990]

You... You made a functional modular planetary gearbox?? That's incredible! Really, well done! I can't wait to see what you use it in next :D

[@SaifonYoutube]

are you scotish or russian???

[@peterciurea7771]

I can't wait to see this channel once metal 3d printing becomes affordable to you. All of a sudden, what previously would be considered toys would become real alternatives to commercial parts and assemblies. Make sure to save every design. With even minimal automation, I can see how this might turn into a business - selling assemblies that now are durable enough to use for hobbyists and eventually professionals.

[@InspectahPatio]

These parts could be cast quite easily already! He just has to make a mold from the plastic parts!

[@kylemilford8758]

He made the designs, it's easy to send them to a CNC to be cut out instead of additive manufacturing

[@MrV1NC3N7V3G4]

Ok bro, you got me. Liked and subscribed with notifications plus a little engagement here for the algorithm. You're very talented. Not only in mechanical engineering, but you're a master of 3D printing! People who haven't 3D printed before just think you click print and out comes a perfect object. They don't understand bed leveling, offsets, rafts, infill, elephant foot, supports, overhang, bed and nozzle temperature, nozzle cooling, extrusion size and feed rates, etc, etc...there is so much that goes into getting a perfect print and you make that part look easy.

[@kylestanley7843]

Yeah, incredible talent on display here.

[@Ais4Drew]

Archimedes once said “give me a lever long enough, and a fulcrum to weigh it on, and I shall move the world”. With this gear box you could turn the earth with enough stages 😎 Great design and work!

[@jerodweaver-iso-c9828]

This is really fantastic work. I think it is sincerely admirable that you made the files to print this free to download. A true maker.

[@pietrom2642]

i think that a nice idea would be to print with increasing stage thickness, so the gears are thicker when more torque is needed and thinner when they spin faster to reduce drag and gearbox size, if i will prints these i think i will try, being in need of pretty high reductions

[@mozkitolife5437]

Very clever. Great work. You should know by now by intuition that those load-bearing parts require much more than 20% infill.

[@trentlee8260]

I enjoyed the video, but whats even more enjoyable, is your accent! MAN it is such fun to listen to your words :D No joke, really mean it! Been watching a couple of your videos now ;)

[@LetsPrintYT]

Thank u mate! ;D

[@999999999omar]

the design looks really professional

[@JjMn1000]

Super cool! A modular gearbox is even cooler! You can use this for so many projects!

[@WhiteDragon103]

Gearboxes usually look like disasters of incomprehensible moving parts, but this is a very smart way of keeping this all tidy!

[@joshuadelaughter]

Pretty awesome. With some modifications, this could be an automatic transmission.

[@ARandomTroll]

you should look into helical gears. would make this much more stable and reduce friction, since the gears are self retaining.

[@aaronveale6402]

Love the design, just a note each stage is 4 to 1 not 3 to 1.

[@skampp]

I found that as well. Was looking to see if anyone had posted a correction.

[@bjornwiegel5220]

Nice gearbox but why didn't you use a design where you could access the bearings inner ring from both sides? In this way you could have tightened up the mounting screws in the planet gear carrier more decent and without paying too much attention to the mounting torque. This would also make your design more robust and lead to a more precise movement of the planet gears...

[@Sim3Dfly]

I think about the same. My gears also melted because of friction on one side.

[@RandomGuy-rj9oq]

Holy shit stuff like this is incredible. I had to subscribe. Its strange your instagram doesnt have more traction. Just keep this up and youll start growing very fast hopefully. I really like the style of your videos, its educational, enjoyable and very satisfying to watch.

[@maverickstclare3756]

good idea but why not 100% infill for the "coupler"?

[@LetsPrintYT]

100% infill is a good idea and this coupler should be redesigned. I was a bit rush at the end. XD

[@Shubham-po2tp]

@@LetsPrintYT Please tell me can I drive two gear with one motor at 1000 rpm 1:1:1 gear ratio 10 mm diameter

[@kamil4151]

Fascinating, your prints were almost hollow in the first round and yet still managed to pull up 20kg. If they manage to make the plastic bond as strong as injection molding, this would be a great way of saving lots of materials.

[@legen_dary42]

Congratulations! You made a desktop winch! Seriously, I could use this overhead in my shop.

[@Sal2740]

2:53 "Do just a little Wiggle Wiggle" xD Best part that make my day :D

[@TankR]

The jaws of your vice, unscrew the plates, flip em around, and used the smooth side.

[@Justin-vj2rk]

You should print the gears as separate pieces then the shaft (click together after print). If you do this you can print the shaft with the layers along the length and it will be much stronger to shear forces.

[@BDYT1422]

5:18 this part got me laughing out of my chair 🤣

[@MoizRehmanK]

Great 👌👌👌. I am giving you an idea to use this gearbox. Use weight to generate electricity . This should use any heavy object lifted to an elevation. The project should devise a mechanism to control its descent at uniform speed. 😊

[@GutoPereira]

It looks like the guys from the math problems... "Jimmy has 5 car breaks, each weighing 10kg"

[@ted_van_loon]

you should try to make a automatic or manual planetary gear box. planetairy gearboxes are often used in things like cars and drills due to the simplicity or making it shift gear ratio. doing that would allow you to always use the exact same gearbox, you only need to set it to a gear, or you can set it while running electronically which allows for a better speed to torc/acceleration ratio.

[@joseantoniozarzosa7805]

Great work. I'll try it as soon as I get more acquinted to my first 3D printer

[@birdpump]

Hey, next you should make a cycloidal gearbox, their super cool😉👍😁

[@regiepera4488]

Trash.

[@regiepera4488]

Can cyclodial drive lift that amount?

[@MethelinaPills]

​@@regiepera4488 same as harmonical drive the cycloidal can feature zero backlash and much more high torque capacity with a smaller size, and yes can lift much more weight. This is a main advantages to the common planetary one... Watch the Wiki, for example, first before write something offensive or stupid...

[@joe7272]

WOW! this project is very focused. The water pump one was impressive but only has some application. This has TONS of applications in other projects! If you had a way to bypass individual stages, you could make a variable gearbox

[@iamhugry]

I made an gear ratio with my lego technic, i used an calculator app and it said it had 880 newton centimeters of torque, it was hella slow but i could barely stop it using a beam, releasing the beam would instantly whip it 1/4 of the rotation forward and lets say it was so strong it ripped apart a small gear

[@SloGamer750]

My guy created 35Nm of Torque at 35cm like nothing really great stuff my man wanna see more what you do with planetary gears.

[@coreydomijan9466]

What lubrication was used for plastic on plastic connection?

[@MegaTraxxas]

This design looks great, thanks!

[@lunarz7117]

One Gear Box to Rule Them All (All The Projects) LOL!!!

[@super_power_tech]

This is great design I was searching for, it inspires me to create something similar in my own projects. Thank you!

[@TheWoodWorkingPilot]

Super cool! Which grease are you using on it for lubrication (the blue stuff)?

[@corisco8817]

The first test (10kg, 35cm) was way, way harder on the gears and motor than any other test that followed in the video. That first one was 3.5 kg*m, while that last, 40 kg test was only some 1.2 kg*m (assuming a 3cm radius winding - it was probably less than that).

[@D3rron08]

Great gearbox design!

[@arthurmorgan8966]

0:58 Knipex pliers wrench parallel jaws ftw

[@mihailronin]

очень правильно сделал. коробка модульная. компактная. если использовать закладные элементы то прочность коробки повысится еще больше. к тому же попробуй сделать вход и выход. тогда одна коробка может использоваться и на крутящий момент. и на максимальное количество оборотов. опять же модули в виде сот тоже очень правильно. можно использовать несколько коробок для обединения. планетарка в планетарке. что бы понижать когда понижаешь.

[@milesprower6641]

if you didnt know, you can remove and flip over the jaws of the bench vise so that they are flat and will not mar surfaces with the teeth

[@negril_rasta]

This could make an awesome generator. Hand Crank maybe

[@Everett-xe3eg]

Reminds me of a really tough little honey bee!

[@tomsmith3045]

Nice design! Very clear explanation.

[@D3rron08]

I will definitely print and send you the Instagram pictures

[@mastershifu445]

6:38 actually because it isnt going as fast as an actual 1 : 81 ratio, its probably an 81 : 1

[@lilhotdog7011]

Damn this was pretty awesome. Good job man!

[@lohikarhu734]

To push in the bearings, if you need to "hammer", use a piece of pipe, or a socket of the same diameter as the outer bearing race...you can use something like "water pump pliers", in place of a vise, again with a little piece of pipe, or a spare bearing, to push the bearing into the gear.

[@PracticalTacticalSheepDog]

Polymaker PLA+ polygonal 100% infill @ 230° would likely yield a stronger part

[@paulmcewen7384]

Excellent video man, really cool gearbox.

[@acorgiwithacrown467]

Your tolerances might need to be a bit tighter or that little wobble will get exponentially worse with each stage but this is a really cool design nonetheless.

[@algodoo8839]

ماشاء الله تبارك الله

[@Sondalive]

"Be sure to grease everything up" proceeds to only grease first stage and put all the other gears in dry... :D

[@QCFreinK]

Perfect. Nice concept.

[@gwfarmer1321]

10:44” I built a tank it’s a great video I recommend”

[@SoundOfYourDestiny]

I'm A-GONNA go watch it.

[@ВолодимирБулавков]

Комментарий для продвижения годного контента и канала !!!

[@hasuo9749]

for an 150w DC motor this gearbox did pretty well.. i must say that the problem while gearing this to a certain number will the the stupidly slow speed of spining.

[@Ericevijayohiani]

Cool project design

[@GreatGloves]

Greetings from Finland!

[@perlaaratani1071]

Awesome bro! It's flawless design.. this can be used in a small wind turbine. I need to multiply rpm from the blades :)! And im starting to undertand thiss *.*

[@putteslaintxtbks5166]

If this were made with herringbone, I think to load them in you would need the case to open from side instead of from the front, but all the gears would stay better in there place. There is something about planetary gears that always kicks me into nerd gear.

[@jesse2916]

Thanks for the tip on the raft. I have the elephant foot issue and didn't know how to stop it without printing on supports.

[@dancoulson6579]

Great design. I love it.

[@ericrichardson8600]

Hello from Idaho. I think you are onto something great with this! I would like to see different ways of using this.

[@akramqachboul1312]

nice gear box thx

[@cripplingdepression8889]

So technically with some optimizations in infill, reinforcements and material this 3D printed gearbox is capable of 30Nm with an ordinary drill motor This is huge!

[@MegaCadr]

Great result!

[@rabindrabhuyan2738]

Wow. Super

[@ubercai]

One piece of advise is use shoulder bolts when interfacing the bearings so bearings doesn't run on a threaded shaft.

[@PaulDominguez]

Very cool.

[@Noosby]

You're a boss! GG!

[@OriginalCheesemoose]

You could get one of those torque adapters and print something to adapt into that. You could see exactly how much torsional force you can apply with it with each gear set

[@blackscorpi6509]

Can I have the stl file for the part on the wood ?

[@woodrunner51]

do a torque test, like the first test, but with bearings like the second test :) first failed due to combination of shear loading and torque loading. not due to just torque second was just a bad deatiling.....but had much less torque on the actual gearbox than the previous test (even though you had more weight, because it was on a much shorter arm

[@Masso1973]

Proven design, nice job

[@slimplynth]

Really helpful video, thanks ❤️

[@jacobrobinson7395]

If you let the weights run the motor instead of the motor lift the weights, it would be a gravity battery!

[@gamekiller9053]

Should design an a special end sungear that has a wider gear at the endor some special mounting point.

[@elenidemos]

Thanks. Great idea for something I need to do.

[@NoNo-tf6ut]

Who is this man and why dose he have so many brake discs?

[@sspence65]

Absolutely fantastic!

[@Spozinbro]

DUDE THIS PLASTIC GEARBOX JUST TWISTED A BOLT!!!!!

[@hanstubben]

If you could lift 10 kg on 35 cm you can easily lift over 100 kg on the radius that rope makes!

[@LesTutosdUneMinute]

Hi! Where are you from? Your accent sounds familiar but I can't really pinpoint it to a region :) Finnish?

[@JohnDoe-ce2wl]

5:18 blaming the viewer for your screw-up, nice touch.

[@craigfourie3485]

The function of bearings should not be impacted by overtightening. The use of washers as a spacer will solve these finicky torque settings. Interesting project...

[@generalprincecodyhedgewolf2944]

Planetary Gearbox is what gives Motor vehicles Automatic transmission

[@genkidama7385]

i hope you discover this technology called metallurgy. it will change your life bro. there is a world beyond plastic.

[@RixtronixLAB]

Nice info, thank you for sharing it :)

[@YasinKAYA-do4ek]

When i see planetary gear, i give a like.

[@klausnielsen1537]

Great idea and great demo!

[@mirrorworld2789]

I love it

[@666DarkOverlord]

I'm wondering what kind of speed you can get if you run this gear box with the input running the other way using the 8 motor gearbox as the input, would be interesting to see the kind of speed and force it can generate with a fan or pump connected as the output of those 2 projects tied into each other, plus material testing for extremes of speed rather than torque.

[@ezruarn]

wonderful!!! Can you make a sliding door mechanism to open and close the door?

[@objection_your_honor]

I printed one and there is nothing to prevent the planetary gear assembly plates from moving up and down. I can push/pull on the output gear and the whole planet gear assemble will move 5-10 mm up and down. This you don't mention around 3:30

[@hidelmich5995]

Very smart ! Thx dude !

[@snorttroll4379]

satisfying