Robotic Hand

During the summer of 2016, Diana Abundo designed a robotic hand using Tinkercad. This open source application supports three-dimensional modelling. Diana produced accurate, full size 3-D images that can be rotated 360 degrees. She used them to refine a design that was later manufactured in plastic with a three-dimensional printer. Printing the plastic bones took nearly eight hours. Some of the phalanges had to be printed separately in two parts. Later, Diana used Titebond II premium wood glue to fasten them together. She preferred this adhesive to Weldon #16, a glue specifically made for plastic. Diana is fortunate to be mentored by Professor Catherine Anderson, Faculty of Medicine, University of British Columbia.

While in grade eleven, to test her concept, Diana designed an index finger in her electronics class. She controlled the finger using a servo and an Arduino Uno programmer. It worked! As a grade twelve student Diana plans to finish the complex task of combining Arduino programming with the servos for full movement. She has cleverly made the phalanges hollow to allow internal tendons to control the fingers and thumb.

In November, Diana will serve a one-week placement with a nonprofit company that makes and services assistive devices for the severely physically disabled. One of the interesting tasks will be manufacturing a sip-and-puff switch by hand. She also hopes to visit clients to help service their assistive devices.

Parts Rendered in Tinkercad

Parts Manufactured With a Three-Dimensional Printer

The Assembled Hand

Professor Catherine Anderson