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coffee grinder part

by tyroney, published

coffee grinder part by tyroney Sep 28, 2012
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coffee grinder part by tyroney is licensed under the Creative Commons - Attribution license.

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2422Views 572Downloads Found in Kitchen & Dining


I found a manual coffee grinder online that was great except for the loose tolerances that let it strip itself out from normal grinding.


I'll probably print this solid, just to be sure. The drive shaft that slides into it has pinched-out fins that have a generally rounded character, so any extra rigidity is desirable.

First revision lacks grind select ridges on the bottom, and is sized almost exactly for the shaft. Might need some loosening to allow smooth/full function. If your peer down from above, you can see the difference between the original gap(toward the middle) and actual dimensions of the shaft.

Unscrew and disassemble the grind drivetrain. Snap the original plastic mount out of the grindstone, replace it with this one, and reassemble. Finally expresso and turkish grinds won't cause it to self-destruct! (I hope)

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Exactly what I needed. Opened the hole a bit with the following changes to the OpenSCAD source you so graciously provided.

translate([0,0,11]) cylinder(h=25, r=3.3, center=true);     //for drive shaft
translate([0,0,11]) cube(size=[8.0,1.2,25], center=true);       //for drive teeth
translate([0,0,9+8.0]) cube(size=[15,2.25,16], center=true);    //gap for assembly
translate([0,0,9+8.0+4]) cube(size=[15,4,16], center=true); //even more gap for assembly

too narrow hole and keys on the sides :(

Thanks! This part just broke on my grinder!

Thanks! Saved me a lot of time not having to model it myself then iterate the design between prints. It didn't work straight away, but with a little massaging, now does the job. Thanks!