Quick Return

Oscillating motion is motion which moves along a path, then returns along that same path backwards and forwards, backwards and forwards.
In this example the drive wheel is used to power a waving machine, notice how the left to right movement is slower than the right to left. This is because that left to right motion takes place over a longer part of the drive wheels turn.
By moving the drive wheel closer to the pivot point this effect can be exaggerated. The same mechanism is used in mechanical saws to provide a quick return after the cutting stroke.

Download and make your own working quick return mechanism. Use it find out how the quick return mechanism works first hand or as the starting point for your own model. More details...


Wednesday 18th May 2011 16:51

absolutly stunning- cammy b

Wednesday 13th Jul 2011 13:42


Thursday 14th Jul 2011 13:40



How about making a King Cobra attacking using quick return while you are working on the grasshopper...?

Hope things go well with it.


Thursday 14th Jul 2011 20:16


robives's picture

Nice idea Umehta!

Tuesday 8th Nov 2011 00:21

yes nice idea

Wednesday 23rd Nov 2011 02:18

Aha! this is what I was looking for...I knew there was something simpler than a piston + modified crank. But I didn't know what its called until I found this. 

Wednesday 22nd May 2013 06:10

ISM Technology

it is a very interesting idea it never striked me that i could create such magnificent stuff from paper