OpenSCAD source code: Dirt Devil hand-held vacuum tool adapter

Dirt Devil Nozzle Bushing.scad

// Dirt Devil nozzle adapter
// Ed Nisley KE4ZNU 2021-10

// Tool taper shift
Finesse = -0.1;             // [-0.5:0.1:0.5]

// PVC pipe liner
PipeOD = 28.5;

/* [Hidden] */

//- Extrusion parameters

ThreadThick = 0.25;
ThreadWidth = 0.40;

HoleWindage = 0.2;

function IntegerMultiple(Size,Unit) = Unit * ceil(Size / Unit);

Protrusion = 0.1;           // make holes end cleanly

//----------------------
// Dimensions

TAPER_MIN = 0;
TAPER_MAX = 1;
TAPER_LENGTH = 2;

Socket = [36.0,37.0,40.0];

LockringDia = 33.5;
LockringWidth = 4.5;
LockringOffset = 2.5;

Tool = [Finesse,Finesse,0] + [30.0,31.1,30.0];

AdapterOAL = Socket[TAPER_LENGTH] + Tool[TAPER_LENGTH];

NumSides = 36;
$fn = NumSides;

//----------------------
// Useful routines

module PolyCyl(Dia,Height,ForceSides=0) {           // based on nophead's polyholes

Sides = (ForceSides != 0) ? ForceSides : (ceil(Dia) + 2);

FixDia = Dia / cos(180/Sides);

cylinder(r=(FixDia + HoleWindage)/2,h=Height,$fn=Sides);

}


//-------------------
// Define it!

module Adapter() {

  difference() {
    union() {
      difference() {
        cylinder(d1=Socket[TAPER_MIN],d2=Socket[TAPER_MAX],h=Socket[TAPER_LENGTH]);
        translate([0,0,LockringOffset])
          cylinder(d=2*Socket[TAPER_MAX],h=LockringWidth);
      }

      cylinder(d=LockringDia,h=Socket[TAPER_LENGTH]);
      translate([0,0,LockringOffset + 0.75*LockringWidth])
        cylinder(d1=LockringDia,d2=Socket[TAPER_MIN],h=0.25*LockringWidth);

      translate([0,0,Socket[TAPER_LENGTH]])
        cylinder(d1=Tool[TAPER_MAX],d2=Tool[TAPER_MIN],h=Tool[TAPER_LENGTH]);
    }
    translate([0,0,-Protrusion])
      PolyCyl(PipeOD,AdapterOAL + 2*Protrusion,NumSides);
  }

}

//----------------------
// Build it!

Adapter();

More details on my blog at https://wp.me/poZKh-arY