sketch001 = startSketchOn(XY)
profile001 = startProfile(sketch001, at = [2.65, 12.2])
    |> xLine(length = 23.49)
    |> yLine(length = -22.68)
    |> xLine(length = -24.2)
    |> line(endAbsolute = [profileStartX(%), profileStartY(%)])
    |> close()

extrude001  = extrude(profile001, length = 500)

sketch002   = startSketchOn(XZ)
profile002  = circle(sketch002, center = [17.5, 22.02], radius = 10.16)

extrude002  = extrude(profile002, length = 50)
myPatterns  = patternLinear3d(extrude002,
                              instances = 10,
                              distance  = 30,
                              axis      = [0,0,1])

subtract([extrude001], tools = [myPatterns])
 |> rotate(angle = 90, axis = [0,1,0]) // we do this to ensure the id is okay after the subtract