adapter.py

from petrify.solid import Vector, Box, Cylinder, Node, Union
from petrify.edge import Chamfer

port = 2.65
outer = 2.28
inner = 2.22
wall = 0.125
mm_p_in = 25.4
to_mm = Vector(mm_p_in, mm_p_in, mm_p_in)

fidelity = 50

class Tube(Node):
    def __init__(self, inner_diameter, outer_diameter, height):
        self.outer = Cylinder(
            Vector(0, 0, 0),
            Vector(0, 0, height),
            outer_diameter / 2,
            segments = fidelity
        )

        self.inner = Cylinder(
            Vector(0, 0, 0),
            Vector(0, 0, height),
            inner_diameter / 2,
            segments = fidelity
        )

        super().__init__((self.outer - self.inner).polygons)

smaller = Tube(inner - wall * 2, inner, 1.5)
bigger = Tube(inner - wall * 2, outer, 1.5)

holster_top = Tube(inner - wall, port + wall * 2, 0.75)
outside = holster_top.outer
chamfer = Chamfer(outside, outside.top.segments(), port - outer)
holster_top = holster_top - chamfer
holster = Tube(port, port + wall * 2, 1.25) + holster_top.translate(Vector(0, 0, 1.0))

adaptor = smaller + holster + bigger.translate(Vector(0, 0, 1.5 - wall))
adaptor.scale(to_mm).to_stl('output/adaptor.stl')