"""Round clearance spacer (unthreaded), Harwin R30-601 (M3 clearance): a brass tube, outside diameter D, bore d, length
L, axis along +Z, one end on the XY plane, centred on the origin.
"""
from steve import Model

clearance = "M3"  # Screw size
length = 10  # mm Length L

# mm. Harwin R30-601XX02 M3 circular clearance spacer (DRG-02004, issue 5): (outside Ø D, bore Ø d)
SPACERS = {"M3": (4.76, 3.30)}

D, d = SPACERS[clearance]

model = Model()
with model.sketch("spacer_sketch", on="XY", name="Spacer") as sk:
    sk.circle("outside", (0, 0), D / 2)
    sk.circle("bore", (0, 0), d / 2)
model.extrude("spacer", "spacer_sketch", distance=length, name="Spacer")
model.material("brass", color="#c6c8c4")   # CW614N, nickel plated
result = model.result()