How to model with precision My 3D modeling skills are limited to SketchUp, so forgive my lack of experience. I don't understand how to model something, in programs like Blender, with precision when it comes to measurements. How can I make something exactly 1/4 inches thick, or extrude a face by 2.38 inches, or 25 mm?
You can just enter an amount when some operator is called.

First you'll have to set your units:



Then, if you choose Metric, you can press, for instance, E (Extrude), and then press, for instance 2, to extrude the selected vertices, and move then by 2 meters.