Kitchen Blender Base Spacer

We don’t use the blender much, so the most recent bearing replacement continues to work. I never got around to re-making the overly long shaft spacer from the first bearing replacement, which I compensated for with a spacer kludge cut from a random chunk of bendy plastic sheet.

Which we put up with For. Eleven. Years.

The blender recently emerged from hiding and, with my solid modeling-fu cranked up to a dangerous chattering whine, I conjured a real spacer:

Blender base spacer - Slic3r preview — Blender base spacer – Slic3r preview

It pretty much disappears into the blender base, which is the whole point of the operation:

Blender base spacer - installed — Blender base spacer – installed

When the bearings fail again, I promise to make a proper shaft spacer and toss this bodge.

The OpenSCAD code as a GitHub Gist:

	// Kitchen blender base adapter
	// Ed Nisley KE4ZNU June 2019

	//- Extrusion parameters must match reality!

	/* [Hidden] */

	ThreadThick = 0.25;
	ThreadWidth = 0.40;

	HoleWindage = 0.2;

	Protrusion = 0.1; // make holes end cleanly

	inch = 25.4;

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

	ID = 0;
	OD = 1;
	LENGTH = 2;

	//———-
	// Just build it

	Spacer = [48.0,66.0,1.8]; // LENGTH raises blade holder
	Aligner = [Spacer[ID],52.0,Spacer[LENGTH] + 3.0]; // LENGTH locks into base ring

	NumSides = 434;

	//———-
	// Just build it

	difference() {
	union() {
	cylinder(d=Spacer[OD],h=IntegerMultiple(Spacer[LENGTH],ThreadThick),$fn=NumSides);
	cylinder(d=Aligner[OD],h=Aligner[LENGTH],$fn=NumSides);
	}
	translate([0,0,-Protrusion])
	cylinder(d=Spacer[ID],h=10*Aligner[LENGTH],$fn=NumSides);
	}

view raw Blender base spacer.scad hosted with ❤ by GitHub

Not that it really deserves so much attention …