Low friction 1:27 reduction gear

by ManWithoutOptions, published

Low friction 1:27 reduction gear by ManWithoutOptions Dec 30, 2015
0 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

2735Views 1202Downloads Found in Engineering


This is a reduction gear made to work with motor that has low torque output. Connecting input axle profile is a square inscribed in 3.75mm circle. Use a empty space of square profile inscribed in at least 4mm to have a tight connection, or you can use the motor connector 1.70mm.stl(1.7mm is the motor axle diameter of the motor I used, may not work for your motor) if you want to turn it by hand. Output axle is a square inscribed in 9mm circle. Every axle, spacer, plate, and plate connection must be filed a bit in order to be fitted to the point of rotating without resistance. Especially file the edge contacting the heated plate due to deformation from the elephant foot effect. You need to give extra filing attention to the top plate and output axle because it is a tight fit. Lubricate everything. Support is already build in and you don't need support to print this. Print with at max 0.2mm layer height because the thread is climbing at 45 degree angle. The custom support is made for 0.1 layer height and 0.4mm nozzle however. If you do not see skirts around axle then you will need to add the supports in yourself. Axle need to be printed in pairs to avoid layer overheating. Do not print the Entire Assembly VIEWONLY.stl because it is for your reference only.

Print Settings

Printer Brand:



Ultimaker 2









More from Engineering

view more

All Apps

3D Print your file with 3D Hubs, the world’s largest online marketplace for 3D printing services.

App Info Launch App

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App

Well without the plate_top this thing is kinda useless to me so I guess I'll have to look elsewhere...

Comments deleted.

I'm trying to print it but I run into a few problems. One is that the plate_top has fatal defects, slic3r says "No layers were detected". The plate_bottom does not have this problem. The second is that all the long axles and screws become so flexible when printing near the top end they just shake and move along with the print head and thus become unprecise. It's a small miracle that threads are usable, but most of them do work, albeit with great difficulty and fear of breaking...
But on the whole: very very nice. Thanks and kudos!!