Using 3D models in work instructions: keep it simple

I’ve been piloting 3D model-based work instructions for a catheter assembly line. The good: fewer interpretation errors on complex subassemblies. The surprise: too much freedom to spin the model led to hesitation and slower takt.

What worked: predefined views and short exploded animations exported from CAD (we used simplified reps/configs to suppress fasteners and small features). Color coding critical interfaces and matching balloon numbers to the eBOM helped. We used a lightweight viewer with cached files on shop tablets so load times stayed under 2 seconds. Locking the file to a PDM-stamped revision and watermarking the screen with the rev avoided wrong-rev mixups.

What didn’t: dumping a full STEP with PMI into a generic viewer. File size killed performance, and operators hunted for the right angle. Also, live CAD on the floor invited accidental edits. View-only is safer. For the first week we kept a one-page 2D cheat sheet at the station to ease the transition.

For those using Creo Illustrate, Composer, or eDrawings/3D PDFs, what’s your minimum recipe? How many views, max file size, and do you animate? Any tips to lock revision while keeping access simple?