The helmet had to be lightweight, durable, and comfortable enough for Niblett to wear every day. “It’s amazing how a simple scan and 3D printing can save a dog’s life,” Mackey said.

After getting a $400 vet bill for extracting a foxtail from his dog, [Hildeguard]’s ear, [Amos Dudley] decided to take the threat seriously and made her a form-fitting 3D printed mask.