zarcon Senior Member Joined: 28 Nov 2010 Posts: 3 Location: Denver Expertise: Pro Barista
Posted Sat Dec 4, 2010, 4:50pm Subject: Re: The fabulous fifteen cent Hario Skerton stepless mod
Hi, Here's a photo of my mod, I took the relevant grinder parts to Ace Hardware and we figured this one out.
1) A short piece of vinyl tubing, which will tightly slide over/screw onto the shaft. 2) A rubber O-ring which fits over the tubing. Adjust up or down for maximum stability. 3) Some food-safe silicon gel to secure the O-ring in place.
Total cost about 8 bucks, most of which was the tube of gel.
Been running it 1-2x per day for a week or so, very happy with the consistency of the grind.
Thanks to all who posted previous solutions-it really helped to read what others have done.
Posted Fri Mar 4, 2011, 11:31am Subject: Re: The fabulous fifteen cent Hario Skerton stepless mod
I'd just like to add that personal testing shows a regular nut to be useless. You need to buy some sort of self-locking nut, because otherwise it will work itself loose and your grind will get progressively larger as you go -- it's completely useless without a self-locking nut.
@rainstorm: Do you mean a course grind setting? (bigger chunks of ground coffee)
Posted Fri Mar 4, 2011, 12:53pm Subject: Re: The fabulous fifteen cent Hario Skerton stepless mod
Figured I'd add my recent stabilizing mod here too. I just used a small piece of aluminum, with a hole drilled in the center, a piece of a Bic Round Stic pen, and a few small screws. I had to carve out some of the plastic under the outer burr to make for a flush fit, which was pretty easy using a sharp Xacto blade. It really works wonders on the coarser settings.
From the bottom: You can see the general mounting position, which lines up with the two punched openings on the outer burr sheath. This is where I secured the stabilizer with some short screws.
The inner burr: The chunk of Bic pen is split, but fits snugly. This is really only a sort of bearing/space-filler, as the top of the burr shaft is wider than the bottom, due to the threading. As such, the stabilizer hole needs to be big enough to allow the threads to pass through, and yet tight enough to do its job. The Bic facilitates the latter, is totally replaceable, and you can get maybe eight chunks per pen body.
From the top: You can see how much space this thing takes up in the throat. Not a good mod for oily bean lovers; they just don't feed through. Medium roasts do fine though.
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