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  • #16
    Originally posted by Talk_Coffee View Post
    Agreed. The key thing is that ceramic burrs are cheap (to manufacture).
    Not decent ones!

    Having replaced dozens of sets of steel burrs in Italian (mainly, + other nationalities) commercial grinders over the years, most of their "off the shelf steels" are far too soft to be considered tool steel quality. Hence their life span is massively less than it should be. The Mahlkonig / Ditting steel burrs are significantly harder (easily tool steel grade) and tend to last a lot longer as a direct result. The Swiss Ditting ceramic burrs in a Vario outlast their own steel burrs by a factor of three (see Mahlkonig website: buried in their research papers somewhere).

    Of course, as mentioned somewhere else in this thread, there are a lot of aftermarket burrs out there. Presumably some of them use decent grades of steel... If I hadn't sold off all my Italian commercial grinders a few months back, I would be actively seeking them out.

    Back to the Vario: That means for domestic users an act of destruction is more likely to take the burrs out as wear is a non event.

    BTW, I would never use a Vario in a high volume environment for a completely different (not burr related) reason: the chamber fills at about the 750g mark and needs a quick clean or the particle size variation is instantly shot. Considering the Vario's main benefit is their (very) narrow particle spread, needless to say that is an instant showstopper in a cafe. You can even hear the Vario's note change when it happens. That is why other "commercial" grinders are more suitable in that environment. For a home user, a quick clean every second 250g lot of coffee is a simple procedure.

    TampIt

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    • #17
      I agree Yelta.... I had first experience about 15 years ago. I poured some fresh beans into the hopper of my burr grinder, flipped the switch and seconds later, it went bang.... a puff of smoke and my grinder was dead !

      After I stripped the machine down, I found a bullet, 22 calibre, just the slug, not the brass casing.
      Yep, the slug had jammed up the works and blew the motor. How the slug got there I don't know... at that time of my life, I was using some vague, supermarket brand of beans distantly related to Colombian drug lords and maybe the bullet came from there !

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      • #18
        Originally posted by terrawarra View Post
        I agree Yelta.... I had first experience about 15 years ago. I poured some fresh beans into the hopper of my burr grinder, flipped the switch and seconds later, it went bang.... a puff of smoke and my grinder was dead !

        After I stripped the machine down, I found a bullet, 22 calibre, just the slug, not the brass casing.
        Yep, the slug had jammed up the works and blew the motor. How the slug got there I don't know... at that time of my life, I was using some vague, supermarket brand of beans distantly related to Colombian drug lords and maybe the bullet came from there !

        hahaha wow, what a story, you never know!, you could be right!!

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        • #19
          Thanks Grummer,.... yeah, it's funny now when I look back at it 15 years later..... but I sure was pissed off that day when my grinder bit the dust, it's now in grinder heaven, somewhere in the sky.

          It was a lesson learned and even now, I'm always on the lookout for any stray bits of crap in my beans. Found a few foreign objects over the years such as small stones and unidentifiable bits & pieces,... but no more bullets !

          cheers

          PS. check out Andys collection of bits & pieces from his past. Stones 'n stuff I've found in coffee...

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