Differential gearbox for educational purposes. The original gearbox was designed by Thangs user "3D Designer". This is a modified version (remix with permition), so it can be 3D printed too, not only used in animation. Most of the objects needs support for 3D printing. The ring has two versions, one needs supports, the second don't needs supports, but your printer must be able to 3D print 45mm bridges and sacrifice layer has to be removed to get the hole (with knife or similar). Assembly video: https://youtu.be/g0EE_gVuJZA

Differential Gearbox

ring_needs_support_version.stl

Educational object, to understand how universal joint works. 
Additionally needed:
M3x10 (or 12) bolt 8 pcs
M3 nuts 12 pcs
M3x14 or longer (for shaft) 4 pcs
Also, shafts can be printed in vertical position, for safer printing, they can be attached with thin line (this object is also prepared, included). 
Optional: I used small magnets to lock the holder to some metallic surface. Magnet dimensions: d8x3 mm, hole 3 mm, mounted with d2.5mm screw.
Licence: https://creativecommons.org/licenses/by-nc/4.0/
Assembly instructions on MyTechFun youtube channel. https://youtu.be/g0EE_gVuJZA


Universal Joint

cardan_u.stl

Educational object, to understand backlash of the thread and how antibacklash nut works.
The spring object should be printed with some less brittle material (like PolyTerra PLA, PETG etc), but may work with regular PLA too.
Since the thread is opened (not continous), nuts should be printed in horizontal position using a supports. The bolt can be printed in vertical position.

How to use it:
https://www.youtube.com/c/MyTechFun

Licence:
https://creativecommons.org/licenses/by-nc/4.0/

Anti backlash nut and bolt

tr16_antibacklash_nut.stl

Educational objects, to understand thread pitch and lead on a bolt and screw nuts.
Licence: https://creativecommons.org/licenses/by-nc/4.0/
More info on MyTechFun Youtube channel:
https://www.youtube.com/c/MyTechFun

Bolt lead and pitch

m10_4start.stl

Educational model, to learn how to assembly a simple ball bearing. 
Additionally needed:
7 pcs airsoft BB (6 mm)
Licence: https://creativecommons.org/licenses/by-nc/4.0/

Ball Bearing

ballbearing_cage_single.stl

Gear backlash explained. Addidionally needed:
M5x10 bolts 3pcs
M5x15 bolt 1pcs
small rubber ring
Optional: I used 4 magnets inserted in holder object during printing at 5.4mm layer height. Holes are designed for magnet dimensions: 5x5x5 mm cube. So it can be mounted to some metallic surface.
Licence: https://creativecommons.org/licenses/by-nc/4.0/

Gear backlash

gear_t24_antibacklash.stl

I am a mechanical engineer working as a teacher and researcher on MATE university in Budapest, Hungary. My main hobby is 3D printing, you can see my activity on MyTechFun youtube channel: https://www.youtube.com/c/MyTechFun

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