cadquery_files/mill/endstop/endstop_plate.py

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

center_width = 18
side_height = 14
center_height = 30
thickness = 4
shift = 2
center_hole_diam = 2.2
center_hole_dist = 9.7
center_hole_shift = center_width/2
side_hole_diam = 3.1

center = cq.Workplane("XY").box(center_width, center_height, thickness)
side = (
    center.
    faces(">Y")
    .workplane(origin=(0,0,shift))
    .rect(center_width, thickness)
    .extrude(side_height)
)
side_copy = side.mirror("XZ")
result = center.union(side).union(side_copy)
result = (
    result.faces(">Z")
    .workplane()
    .rect(center_width/2,center_height+side_height, forConstruction=True)
    .vertices()
    .circle(side_hole_diam/2)
    .cutThruAll()
)

result = (
    result.faces("<Z")
    .workplane()
    .rect(center_hole_shift,center_hole_dist,forConstruction=True)
    .vertices(">X")
    .circle(center_hole_diam/2)
    .cutThruAll()
).chamfer(0.5)

show(result)

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