Violinist Adia Cardona plays the violin with a prosthetic right arm. After finding her bow was sliding up and down the violin due to lack of wrist movement, engineers at Utah’s Brigham Young University created a 3D-printed device to help maintain her contact point. 

Initially using a chopstick as a prototype, engineer Joshua Vanderpool says, ‘I was able to place the chopsticks on different spots on her violin just to see where it would be most effective. The next challenge was just how do I attach it.’

Watch: Adrian Anantawan, born without a right hand, performs Tchaikovsky’s Violin Concerto