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Unlock a world of mechanical wonders for just $10.00 per month! The Collapsing Depot instantly gives you access to my ever-expanding library of premium models. Choose up to five of your favorites each month to download and make your own. But that's not all—our catalog is continuously updated with new releases, ranging from 4 to 8 new models every month. This tier is perfect for those just getting started in 3D printing!

Models include: • Collapsing Swords • Collapsing Lightsabers • Planetary containers and fidgets • Puzzle presents gift boxes • Print-in-place grippers • Miscellaneous designs

In the Armory you will also gain access to my private discord server! In the server you can chat with other collapsing connoisseurs about 3D printing, ask questions about printing my models, share photos of your prints and more!

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Models include: • Collapsing Swords • Collapsing Lightsabers • Planetary containers and fidgets • Puzzle presents gift boxes • Print-in-place grippers • Miscellaneous designs

In the Armory you will also gain access to my private discord server! In the server you can chat with other collapsing connoisseurs about 3D printing, ask questions about printing my models, share photos of your prints and more!

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Claim your throne in the Arsenal! For $40.00 a month, you'll receive unlimited access and downloads from my premium model collection a fantastic value that makes sure you never run out of projects.

Models include: • Collapsing Swords • Collapsing Lightsabers • Planetary containers and fidgets • Puzzle presents gift boxes • Print-in-place grippers • Miscellaneous designs

In the Arsenal you also gain access to my private discord server! In the server you can chat with other collapsing connoisseurs about 3D printing, ask questions about printing my models, share photos of your prints and more!

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This membership is for companies and businesses who wish to show off printed versions of my designs for promotional reasons. A active membership grants you access to my entire library of designs and the ability to use my printed designs for promotional reasons. The selling of prints or sharing of the files is still prohibited.

3D Printing World
3dprintingworld25K followers
3dprintingworld
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Mini Planetary Gear Print-in-Place Demo 3d model
3dprintingworld
3dprintingworld
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Mini Planetary Gear Print-in-Place Demo 3d model
Mini Planetary Gear Print-in-Place Demo 3d model
Mini Planetary Gear Print-in-Place Demo 3d model
Mini Planetary Gear Print-in-Place Demo 3d model

Mini Planetary Gear Print-in-Place Demo

This model is restricted by licensing terms. 

Mini Planetary Gear Print-in-Place Demo This is a mini version of the original Planetary Gear Print-in-Place Demonstration unit I made previously. I really liked the original version so I thought I would make a lower profile version about the same weight as a benchy so it could be used as a test print or for filament color samples. This version is only 19g about a third of the original size.

Size The gears are module 1, both the sun and planet gears have 12 teeth and the ring gear has 36 teeth. Ratio: 3:1 or 1:4

Demonstration If you hold the carrier and turn the sun gear, you get at 3:1 speed reduction. This ratio is a result of the 36 teeth on the ring gear divided by the 12 teeth on planet gears. If you wanted further reduction, you would make the sun gear smaller than the plant gears.

If you hold the carrier and turn the ring gear, you get a 1:4 speed increase on the sun gear. The is because the much larger diameter ring gear is moving faster than the smaller sun gear. The equation works out to be the 36 teeth of the ring gear divided by the 12 teeth of the planet gear plus 1.

If you hold the sun gear and spin the ring gear and the carrier, there is no reduction and it acts like a bearing

Print instructions Designed for a .4mm nozzle, .2mm layer heights, no supports at 100%. This version has tighter clearances than the original so it will work better at a smaller scale. It is a little more difficult to print so verify your; first layer height, extruder calibration, and the size of layer change blobs.

Printed with Protoposta’s Mermaid's Tale Metallic Teal HTPLA(aff.)

Printed on the Muldex rep-rap IDEX printer.


Support and Licensing If you would like to help support more free models, or get permission to sell physical copies of my models, consider joining my Patreon

Community Makes (1)
Prusa MK3S+ 2 hr 59 m, 0.2 layer height, 0.4 nozzle
Prusa MK3S+ 2 hr 59 m, 0.2 layer height, 0.4 nozzle


Community Makes (1)
Prusa MK3S+ 2 hr 59 m, 0.2 layer height, 0.4 nozzle
Prusa MK3S+ 2 hr 59 m, 0.2 layer height, 0.4 nozzle

Discussions
Paul W
phoppfw

cool toy, great for learning planetary gear ratios!

Greg's M
GregsMakerCorner

This makes an amazing fidget toy. I really like this model, nice job!

Riley D
rjdaniels0311

What is the tolerance for this model? My printer seems to be struggling to print the components separately.

3D Printing World
3dprintingworld

They are a little tighter then my other models, I normally design for .35mm but this one is closer to .25 in some places.

Mini Planetary Gear Print-in-Place Demo

559 downloads · 4 years ago in  and 
3D Printing World
3dprintingworld25K followers
This model is restricted by licensing terms.