If you have read some of my other posts, you can sense how excited I am about the possibilities 3D printers can bring about – not just in land fill avoidance, or mass carbon container ship avoidance, or household repair. Seriously meaningful possibilities. Like the work going on in the e-Nable community with 3D printed prosthetics (https://hub.e-nable.org/p/devices?p=e-NABLE+Phoenix+Hand+v3).

Here is an interesting video about something called a whiffletree (whippletree).^* Ingenius mechanics to help with prosthetics movement while keeping it relatively simple.

I thought it was pretty fascinating.

* – From Wikipedia – “A whippletree, or whiffletree,^[1][2] is a mechanism to distribute force evenly through linkages. It is also referred to as an equalizer, leader bar, or double tree. It consists of a bar pivoted at or near the centre, with force applied from one direction to the pivot and from the other direction to the tips. Several whippletrees may be used in series to distribute the force further, such as to simulate pressure over an area as when applying loading to test airplane wings. Whippletrees may be used either in compression or tension. They were also used for subtraction and addition calculations in mechanical computers.”