3D Printed Gearbox Series [Episode 1]

How fast can we get these 3d printed gears to spin? This this video series we will find out.

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Learn how to design your own cool things:

My favorite 3d printer: Creality Ender 3 Pro:

Slicer: Cura
Material: PLA
Nozzle Temperature: 200
Bed Temperature: 50-60
Layer Height: 0.2 to 0.28
Infill: 20-40%
Print Speed: 50mm/s

I recommend these filaments:

Real Copper Filament:

Hardware:
Ball Bearings:

Carbon fiber rods:

*****Gearbox STL files (Updated continually)*****:

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[nevinherren]

I personally think the 2nd version was th e best bet just get a longer crank arm.

[mxs]

You NEED lubrication. I work with wooden gears and use candle paraffin or dry soap as dry lubricant for the teeth. The difference it makes in friction is insane (to the point where most of my mechanisms wouldn’t even work without it). I haven’t worked with plastic gears so I don’t know if it would be better to use some kind of liquid lubricant instead or not. But anyway, you need lubrication.

[bb-brett]

This is awesome I can’t wait to see the hybrid version of 1 and 3!

[iraqifoodcart]

I can't be the only one who only wants one video on this subject.

[gnramires]

I have a few suggestions: (1) Your torque essentially vanishes on the later (fastest) gears, the first gears get most of the torque. So you can make the first gears more heavy and more chunky, by increasing their width. (2) The efficiency of a gear is roughly a function of the tooth depth w.r.t. gear size. So to make it more efficient, reduce tooth depth of the ones spinning quicker (or increase their overall size), which works since you don't need much torque (less tooth depth gives less resistance/durability)

[scottcarlson]

Try herringbone gears. Much more contact patch between the teeth and will work much better on the higher speed gears

[jonah]

What a cool idea! Have you thought of any cool applications for this using metal gears? Like adding a propeller to one end and hydraulic press to the other🤔

[sharcc]

Add 40 extra gears, attach the input to a utility truck's engine for the torque. RPM go weeee

[elijahizere]

thank you so much for putting bearings on it :)

[trencher]

Awesome! Keep it up, can’t wait to see what’s next! (I really like the up gearing)

[nd-place]

Always make sure to use proper lubrication! You’d be surprised at the difference it makes.

[bryanmengwasser]

I made something similar for an electric boat I’m building. The input spins at around 20, 000 rpm and the output at around 1, 333 RPM. The 4 gears are solid ABS and the wooden enclosure houses 6 bearings. The gears are lubricated with white lithium grease, which appears to be inert. I should have used graphite lubricant, but white lithium was the only grease I had on hand.

[Pseudo___]

The thing most people dont realize about the gear wars is it was never really about the gears

[julianyoule-white]

I am sure you know this but consider wearing a lexan face shield in case you exceed the tensile strength of the plastic and you have a centrifugal explosion.

[guillaumehaerens]

I don't know what kind of filament you print with, something like pla pro or something like that. Maybe you can try ASA, which is suitable for that kind of thing.

[lionelpeters]

Try the 2nd version with a larger crank gear

[fractal_mind]

Need a second handle left side to hold the thing while you crank m

[Kooliosis]

Use one gear ratio to turn the handle of the other and so on

[ngu_wafflz]

For some reason i waan see gears like this in drag car 😅

[fakethoven]

Add many more gears like hundreds and attach a Drill