CAD 102 in Onshape: Parametric Modeling & Smarter Part Design

Ready to go beyond the basics and start building models that are easy to edit, resize, and reuse? This follow-up class is the next step after an intro CAD session (or for anyone who already knows how to sketch and extrude). We’ll focus on parametric design in Onshape—using dimensions, constraints, and reference geometry to create parts that update cleanly when you change a few key values.
You’ll learn powerful modeling tools like Revolves and Sweeps, plus the techniques that make parametric models “robust” (meaning they don’t fall apart when you tweak a dimension). We’ll also introduce variables and simple configurations, so you can build a family of parts—multiple sizes or options—from one model.
This class stays hands-on: we’ll build one or two practical parts step-by-step, then you’ll modify them using parametric controls to see how design intent works in real life.

What you’ll learn

• Design intent: how to plan models so edits behave predictably
• Advanced sketching & constraints: cleaner sketches, fewer dimensions, stronger relationships
• Revolve & Sweep workflows: creating parts that can’t be done well with extrudes alone
• Patterns & symmetry: linear/circular patterns, mirrors, and when to pattern features vs parts
• Variables & configurations (intro): drive a model with named parameters and create size variants
• Practical part finishing: fillets/chamfers, holes, and edit-friendly best practices

What you’ll make
A finished Onshape model (or two) that demonstrates advanced features—then you’ll resize and modify it using variables/constraints to create different versions without remodeling.

Who this is for

• Anyone who has taken an intro CAD class, or already knows:
• sketch → dimension/constraint → extrude/cut
• Makers, 3D printing enthusiasts, CNC hobbyists, and product/design beginners who want more control and speed

What to bring

• A laptop with a modern web browser (Onshape runs in the browser)
• A mouse is strongly recommended
• An Onshape account (free accounts work fine for learning)