#This example is meant to be used from within the CadQuery module of FreeCAD.
import cadquery, FreeCAD, Part

#Create a new document that we can draw our model on
newDoc = FreeCAD.newDocument()

#shows a 1x1x1 FreeCAD cube in the display
initialBox = newDoc.addObject("Part::Box","initialBox")
newDoc.recompute()

#Make a CQ object
cqBox = cadquery.CQ(cadquery.Solid(initialBox.Shape))

#Extrude a peg
newThing = cqBox.faces(">Z").workplane().circle(0.5).extrude(0.25)

#Add a FreeCAD object to the tree and then store a CQ object in it
nextShape = newDoc.addObject("Part::Feature", "nextShape")
nextShape.Shape = newThing.val().wrapped

#Rerender the doc to see what the new solid looks like
newDoc.recompute()