I’m developing a physical “typing ring” that students can slip onto a finger to gently guide proper hand positioning and, in turn, sharpen their typing accuracy. What I need now is a product-ready design: an ergonomic form factor, material recommendations that feel comfortable during long study sessions, and files I can hand straight to a prototyping shop or 3-D printer. I’ll share sketches of the concept, keyboard measurements, and the specific finger placement cues I want the ring to provide. Your job is to translate those ideas into a refined CAD model, suggest manufacturable materials (silicone, TPU, or anything you feel is better), and specify basic dimensions and tolerances so the first prototype fits most adolescent hands without slipping. Deliverables • 3-D CAD files (STEP or STL) • Brief material and finishing notes • Simple instruction mock-up or diagram showing how the ring promotes accurate keystrokes I’m happy to answer questions fast so we can iterate quickly and get a functional prototype in hand. Let’s create a small, clever tool that helps students hit the right keys every time.