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Hario Skerton Motor Mod
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pencerw
Senior Member


Joined: 25 Jan 2014
Posts: 2
Location: United States
Expertise: I love coffee

Espresso: Moka
Grinder: Hario Skerton
Drip: Chemex
Posted Sat Jan 25, 2014, 7:34pm
Subject: Hario Skerton Motor Mod
 

Hey all - first post here!

I got a Hario Skerton a few years back, but quickly grew tired of the hand crank (+ the jumps & catches & spills I frequently had with it). So I retrofitted mine with a nut instead of a thumbscrew, and have been using a drill with a nutdriver to grind my coffee.

A friend of mine has the Hario MSS-1B Mini Slim grinder, and he has it even worse: The shaft has a pentagon stud, which has a loose fit with the stamped handle and is difficult to adapt to a drill. We were talking about his situation this week, and I decided to model a pentagon driver that could be 3D printed and would allow the user to use a drill to grind their coffee easily & quickly.

I realize that this is a pretty small market - people who are okay with having a drill in their kitchen - but I'm curious whether anyone else out there would be interested in something like this. I'll be testing a prototype of the part over the next few weeks; if you're interested, give a holler here or on my website and I'll work on getting you one to test out!

Cheers,
Spencer Wright
Brooklyn
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Burner0000
Senior Member


Joined: 28 Jul 2011
Posts: 1,050
Location: Cambridge, Ontario Canada
Expertise: Professional

Espresso: Rancilio Silvia, VFA Expres...
Grinder: Macap MX/VFA N1464/Kyocera...
Drip: Manual Drip, French Press
Roaster: Behmor 1600 / Sonofresco
Posted Sun Jan 26, 2014, 11:45am
Subject: Re: Hario Skerton Motor Mod
 

You can buy hex socket anywhere that allows you to use any size socket with a drill.  If you  use an M6/10ml socket it will work nicely.  One idea like the Versalab M3 would be to side mount a motor to the side of the grinder and allow a belt to crank the shaft for grinding.  IMO anything more than a drill would cost too much.  Better off just buying a motorized grinder.
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pencerw
Senior Member


Joined: 25 Jan 2014
Posts: 2
Location: United States
Expertise: I love coffee

Espresso: Moka
Grinder: Hario Skerton
Drip: Chemex
Posted Sun Jan 26, 2014, 6:58pm
Subject: Re: Hario Skerton Motor Mod
 

@Burner-

Thanks for the feedback!  Yeah, for my Skerton I just used an M6 nut and a 10mm nutdriver - it's super easy!

The problem is that the Mini has a pentagonal shaft, which is totally weird, and off-the-shelf solutions don't really exist. The part I'm prototyping fits the pentagonal shaft perfectly so it can be used with a drill.

I thought about mounting a DC gearmotor to the grinder too, but yeah - it seems totally impractical for anyone other than a tool geek like me :)

Spencer Wright
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