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HG-1 TiN Coated Burrs flaking already
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wow !!!! in all my years never seen this before . has anyone contacted you yet after the complaint ?
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Dr friend received his genuine Mazzer burr set last week and installed them immediately, happily grinding away each day.
I agree JohnA, if it was a bizarre one-off occurrence why did he not dig through his emails, contact my friend and even try to sort something out?
When you get your Key, please post back on this thread after about 8-12mths with an update on how your TiN burrs are coping.
jasiano ... I don't have a HB login so I didn't post the question there, maybe I will at some stage. Thanks for raising the issue in the thread, it wasn't apparent you did this.
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one would think if there was an issue with them, there would be many posts about it on other forums. Even if there was a bad batch.
WW arent the only ones who use this coating.
No excuse for no communication though.
Hasnt put me off i am very much looking forward to getting my key grinder
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I was reading up on how to remove TiN ... it requires very concentrated inorganic acids at elevated temps as cited above, all of which are very hazardous. The organic acids in coffee aren't going to do anything. A curious Russian patent application used a combination inorganic salt solution but again, these wouldn't be present in a roasted bean.
Basically I see no point in the TiN coating since it seems to flake off under minimal duress, and there is no TiN to TiN contact so lubricity isn't an issue.
I just feel bad for my friend to have to fork out another $400 (GBP equiv + VAT) for what is meant to be a "lifetime purchase". Plus for anyone else who might be experiencing the same.
One thing's for certain, given that WW insists on supplying and defending TiN coated burrs, they'll never have me as a customer. Not that I'd ever need it, I have 2 BNZ Conicals, a BNZ Flat, and a Sette 270.
My Dr friend corrected me on my earlier assertion that Ti metal is safe in the body. Apparently after decades of using Ti in hip replacements it now appears that Ti to Ti contact increases metal serum levels and ongoing research is being conducted into the toxicity implications. He said Ti is no longer used in these circumstances.
"Don't worry sir, it's proven to be entirely safe!!" ... until it's not.
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No it isn't. The damage seen is manifestly not chemical damage and the acids in coffee are of the wrong type, at the wrong concentration and at the wrong temperature to cause any such damage.
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My only experience with either TiN or DLC (diamond like carbon, coating. different but similar co-efficient of drag) is used on motorcycle suspension components and is applied for reduction of stiction, and durability.
This below would need to be verified by further independent opinions to be considered as reliably factual....
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TiN will oxidize at 800 °C in a normal atmosphere. TiN has a brown color, and appears gold when applied as a coating. It is chemically stable at 20 °C, according to laboratory tests, but can be slowly attacked by concentrated acid solutions with rising temperatures.[5] Depending on the substrate material and surface finish, TiN will have a coefficient of friction ranging from 0.4 to 0.9 against another TiN surface (non-lubricated).
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And as different origins of roasted coffee beans can contain many acidic compounds this may be the best explanation for your friends experience.
Good luck with the approaches to WW.
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The word "recall" comes to mind.******
The HG-2 is still built around the massive 83mm conical burr set. We source our burrs exclusively from Mazzer, but apply our own unique secondary processes to partially season and make them suitable for hand-grinding, and then seal in the edge with a life-prolonging and completely food safe TiN coating. This will last both you and your children's family a lifetime of world-class coffee grinding.
******
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Agree. There could be legitimate reasons why WW doesn't respond. One could be the design & manufacture of the HG-2 is taking up all his time. Another could be that the website form submission doesn't actually work and he won't know this because he doesn't get any emails from it. Or, maybe some other reason ... ??Originally posted by amberale View PostIt sounds like he has legitimate concerns.
I become very frustrated with companies that hide behind communications walls.
Suffice it to say having tossed down a fair chunk for an early Xmas pressie last year (to the horror of his wife when he set it up!) and now having to throw down a bunch more for genuine burrs because WW doesn't respond shouldn't sit right with anyone.
To answer your earlier question, no motor mod. He grinds 30g for his morning brew which takes just 20s handle turning. This is a godsend compared to the 3+ minutes of tedium with the Comandante so he definitely has no interest in powering it.
I've emailed him with the suggestion to post something on FB. I had a look at IndieGoGo, TY to echeung for posting the link there.
Quoting from the WW website on the HG-2 (the HG-1 page says the same)
******
The HG-2 is still built around the massive 83mm conical burr set. We source our burrs exclusively from Mazzer, but apply our own unique secondary processes to partially season and make them suitable for hand-grinding, and then seal in the edge with a life-prolonging and completely food safe TiN coating. This will last both you and your children's family a lifetime of world-class coffee grinding.
******
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It sounds like he has legitimate concerns.
I become very frustrated with companies that hide behind communications walls.
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