Empowering and inspiring people with limb difference through the design and build of innovative 3D printed arm devices

UnLimbited Alfie Edition Arm

Version 2.1

Named after its first-ever recipient, ‘Alfie’ is Team UnLimbited’s current design. Released in 2018, the open source arm is specifically designed to stand out and show off a child’s limb difference, giving them a positive psychological boost.

It is designed to be low cost, lightweight, accessible and easy to assemble.


We have streamlined the process to make it as simple as possible to generate the ‘blueprints’ needed to print the UnLimbited arm.

With just three key measurements – hand length, forearm length and bicep circumference, all print files are generated automatically.

The design is provided free of charge under an open source licence.