I’ve been using the Arduino Uno board in several prototyping projects but I haven’t been able to find a decent and precise 3D model of it to use as a design reference, that's why I gather some technical drawings, grabbed my caliper and made my own model.

The initial idea was to quickly model a basic just-relevant-volumes 3D model, but I fell down in a detailed-modeling spiral that ended up getting all mayor details, textured surfaces and superficial finishings.You can find the model here.