import cadquery as cq
from cadquery.occ_impl.exporters import *
from ocp_vscode import show

outer_diam = 25
inner_diam = 20
outer_height = 2
inner_height = 15
inner_thick = 1.5
cut_width = 2

result = (
    cq.Workplane("XY")
    .workplane()
    .circle(outer_diam/2)
    .extrude(outer_height)
    .faces(">Z")
    .workplane()
    .circle(inner_diam/2)
    .circle(inner_diam/2-inner_thick)
    .extrude(inner_height)
    .faces("<Z")
    .fillet(1.5)
    .faces(">Z")
    .edges()[0]
    .chamfer(7.5,1.2)
    .faces(">Z")
    .workplane()
    .rect(inner_diam, cut_width)
    .rect(cut_width, inner_diam)
    .cutBlind(-inner_height)
)
show(result)

# export the box as a STEP file
with open("/home/sgruen/Dokumente/cadquery/mill_cap.step", "w") as fp:
   cq.exporters.exportShape(result, ExportTypes.STEP, fp)