The folllowing example creates a sketch in the XY plane, creates a 2x2mm rectangle in said sketch and extrudes it to a height of 0.1mm.
import cadquery as cq # Create workplane (2d coordinate system for us to create the sketch in) wp = cq.Workplane("XY") # Create sketch, create rect, close sketch and extrude the resulting face result = wp.sketch().rect(2, 2).finalize().extrude(0.1) result # This line is just to show the result in cq-editor or jupyter