import cadquery as cq

# Linear slider base (rails + stops)
stroke = 150.0
base_w, base_t = 40.0, 8.0
rail_w, rail_h, rail_gap = 8.0, 8.0, 16.0
stop_depth = 6.0

rail_off = (rail_gap + rail_w) / 2.0
base_len = stroke + 60 + stop_depth * 2

base = (
  cq.Workplane("XY")
    .box(base_w, base_len, base_t, centered=(True, True, False))
    .faces(">Z").workplane()
    .pushPoints([(rail_off,0), (-rail_off,0)])
    .rect(rail_w, base_len).extrude(rail_h)
)