New Mahlkonig "PEAK" grinder - Page 9

Grinders are one of the keys to exceptional espresso. Discuss them here.
contraflow88
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#81: Post by contraflow88 »

New video posted on the PEAK:


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weebit_nutty
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#82: Post by weebit_nutty replying to contraflow88 »

Very nice!

Although TBH, such a demo is worthless without proof those grounds can produce a proper extraction. They seem rather coarse to me.
You're not always right, but when you're right, you're right, right?

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caddderly
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#83: Post by caddderly »

Anyone going to SCAA that can report back?

Any new info on this grinder?

boxerboxer
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#84: Post by boxerboxer replying to caddderly »

I would check back here after SCAA.

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Maxwell Mooney
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#85: Post by Maxwell Mooney »

weebit_nutty wrote:Very nice!

Although TBH, such a demo is worthless without proof those grounds can produce a proper extraction. They seem rather coarse to me.

Well, they didn't post a video with those grounds specifically, but they did post this photo showing a 21.26% extraction yield from a 20g dose (rather high) with 43.2g beverage yield, and 27s extraction time. It was with an Olympia Kenya filter roast coffee, which by all rights is probably one of the hardest coffees to extract that you can find. Olympia is definitely a light roaster, and Kenyan coffees are quite dense. Pretty exciting stuff, as simply attaining that level of extraction has been very very difficult with espresso.

"Coffee is evidence of Divine Grace, flavored coffee evidence of the Fall" -Kevin Hall

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TheJavaCup77
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#86: Post by TheJavaCup77 »

Anyone with an idea of what the grind rate is on the finest setting?
It could be as complex or as simple as you want. It's the choice of the barista.

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cannonfodder
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#87: Post by cannonfodder »

JohnB. wrote:Both Bunn & Ditting will resharpen their cast burrs up to 3(?) times. I've never seem any company offer to sharpen one of their machined burrs.
I may have to try honing my burrs some day. I do a lot of sharpening, straight razors, knives etc... so I have a large selection of stones going up to 12,000 grit. I have some very small fine stones uses for touching up the blades on my wood working equipment, jointers, plainers... anything using a small set of cutting blades. I bet I could use a small triangle stone or thin flat stone to refresh the edge on my burrs. It would be a long slow hand honing process but I dont know why it would not work provided the burrs were not chipped.
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AssafL
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#88: Post by AssafL replying to cannonfodder »

It may be easier to hold the stone in a vise (use something soft like a rubber mat so it wont chip - or use a Panavise with plastic jaws) and use perpendicular motion on the burr. It may also be possible (and probably easier) to use a dremel disk as a sharpener. I may try that sometime.
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Beenbag
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#89: Post by Beenbag »

You might also consider just "lapping" the burrs on a flat surface (stone) to just polish the outer flat surface that does the fine grinding ? :wink:

LukeFlynn
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#90: Post by LukeFlynn »

The Grounds in that video are sooooooooooo fluffy.