Mechanical Design

Explore & Discover

Mechanical design is how engineers turn ideas into real objects — bridges, bike frames, phone cases, and the chairlift systems at Utah ski resorts all started as someone's sketch and a CAD file. Start by exploring what CAD (Computer-Aided Design) actually looks like. Watch a few YouTube videos of people designing parts in Fusion 360 or Tinkercad. Then look up how something near you was engineered — search "how are mountain bike frames designed" or "how are ski bindings made." Visit the Utah Museum of Natural History or check out Utah State University's engineering department online to see local projects. You're ready for the next step when you can describe what CAD software does and name one real product that was designed with it.

Learn the Basics

Learn the vocabulary of mechanical design: sketch, extrude, revolve, constraint, tolerance, and assembly. Tinkercad (free at tinkercad.com) is the easiest place to start — Autodesk built it specifically for beginners, and it runs in your browser. Complete Tinkercad's built-in lessons, which walk you through making 3D shapes by combining and cutting simple forms. Watch a few "Fusion 360 for beginners" videos on YouTube from Lars Christensen (free) to see where the skill leads. You're ready for the next step when you can complete Tinkercad's starter tutorials and create a simple 3D shape like a box with a hole through it.

Build Your First Project

Design your first functional object in Tinkercad — something that solves a small real problem. Ideas: a phone stand, a cable clip, a custom nameplate, a hook that fits your bedroom door. Think about how it needs to work: what forces will act on it, where does it need to be strong, does it need to fit around something specific? Measure real dimensions with a ruler before you model. Export your design as an STL file. If you have access to a 3D printer (check local libraries in Salt Lake County — several have them free to use), try printing it. You're ready for the next step when you have designed and exported a complete 3D object that was built to solve a specific, measurable real-world problem.

Experiment & Iterate

Move into Fusion 360 (free for students and personal use at autodesk.com) and redesign your first object there. Fusion 360 uses parametric modeling — dimensions are controlled by numbers you can change, so editing is much more powerful than in Tinkercad. Build the same object you made before, but this time use a proper sketch with constraints. Then redesign it at least twice: make it lighter, make it stronger, or make it fit a different size. Watch how changing one dimension automatically updates the whole part. You're ready for the next step when you can create a fully constrained sketch in Fusion 360 and use Extrude to turn it into a 3D body.

Advanced Techniques

Learn assembly modeling and engineering analysis. In Fusion 360, build a design with at least two separate parts that connect together — like a hinge, a snap fit, or a simple gear pair. Use joints to define how parts move. Then run a basic Simulation (Fusion 360 has a free stress analysis tool) to see where your design might break under load. Look up "design for manufacturing" principles — understanding how parts will actually be made changes how you design them. Explore open-source mechanical designs on Printables.com and GrabCAD for inspiration. You're ready for the next step when you have an assembly with two or more parts joined by a constraint and can describe where your simulation shows the highest stress.

Final Project Showcase

Design a complete mechanical project with a real engineering purpose. Ideas: a custom mount for a bike light, a Wasatch trail marker stake, a mechanism with moving parts like a simple clamp or gear system. Create a full assembly in Fusion 360 with at least three parts. Produce engineering drawings (Fusion 360 can generate these) showing dimensions for each part. Write a short design brief explaining your problem, your design decisions, and how you'd improve it in version two. Export your STL files and share your project on Printables.com or GrabCAD. You're ready for the next step when you have a documented multi-part mechanical assembly with engineering drawings and a written design rationale.