Breville BCG800 Smart Grinder

[A_M]

Re: Breville BCG800 Smart Grinder

We have an extensive QC process during production, but from time to time things can get missed. We have developed a "shim kit" to fix problems such as this.

What gets missed during QC that requires the development of a shim kit?

QC is about meeting manufacturing specs ;D

Quality is about continuous improvement, following customer and internal feedback ;D

Changes - Often required after assumptions and or miss calculations as to materials or the design has not covered all bases.

A closed loop - If the company is focused and has systems in place to manage the C.A.R. and implement 8-)


BUT... I am only stating the obvious

[Thundergod]

Re: Breville BCG800 Smart Grinder

Stating the bleedin obvious to me AM.

The way I see it (until Phil replies) is that to need a shim kit something was machined wrong.
Now thats not "missed" as such.
Unless he meant that QC missed picking up a part that did not meet specs.

Also, in these days of automation, I would think that the machining of said part was a set and forget operation. So once the specs are set they are all machined either to spec or not.
If you find one part not meeting specs, in all likelihood the whole machining run are all the same.

Lets see what Phil comes back with.

[>mcknightp]

Re: Breville BCG800 Smart Grinder

What happens during production is, burr sets are sorted into groups of the same measured height, when these are being installed on the line, a digital vernier depth gauge is used to adjust the burrs to a specific depth/height relationship with respect to a set position of the grind adjustment dial. The process has proved to be very robust in delivering well adjusted units off the line, but given its mass production in China, "stuff" happens. Its not the automation that breaks down, its the human involvement in the process.............the shim kit was actually developed to allow users whose grinders are at the course end of the tolerance range, the ability to bring the burr "gap" back into spec after the burrs have worn over time with use. These will most likely be offered  free of charge through our customer service centre but Ill confirm that here and their availability. These will also be needed when a user decides the burrs are dead & need to be replaced. You know, weird pours & funky tasting coffee from your known machine/bean experience.

Cheers, Phil

[iaindb]

Re: Breville BCG800 Smart Grinder

Phil, are you really from Breville or am I just dreaming that an (up till now) appliance brand is taking an interest in the after sales experience

Reminds me of the the whirlpool forums where ISPs, retailers, importers and manufacturers are all chipping in - it makes a good community.

[TC]

Re: Breville BCG800 Smart Grinder

Agreed that its great that Phil is contributing to the discussion here. [smiley=thumbsup.gif]

We have this grinder on demo all week and to show visitors how good it is, you can sample it toe to toe, same beans, same machine against the Kony-E

Chris

[cuppacoffee]

Re: Breville BCG800 Smart Grinder

We promised to run a grind analysis and here it is.

Its no BNZ, but then we never expected it to be. It does however confirm my earlier recommendation that the Breville Smart Grinder represents great value for the sub $500 market.

Cheers and stay tuned for more developments.

[scarey]

Re: Breville BCG800 Smart Grinder

Interesting - theres less fines than the BNZ (if Im reading it right).

Where does the "Desirable Distribution" come from? It would be nice to understand the theory.

[emckissock]

Re: Breville BCG800 Smart Grinder

Perhaps Im just being stupid, but what exactly is the comparison showing me?
There is a desired distribution on the graph, but how is it determined?
What is the y-axis? Id guess at %, but dont think that makes sense for a continuous line, only for a set of discrete points.
Am I missing something really obvious?

[danq]

Re: Breville BCG800 Smart Grinder

@ who me:

http://en.wikipedia.org/wiki/Probability_density_function

[cuppacoffee]

Re: Breville BCG800 Smart Grinder

Interesting - theres less fines than the BNZ (if Im reading it right).

Where does the "Desirable Distribution" come from?  It would be nice to understand the theory.

Perhaps Im just being stupid, but what exactly is the comparison showing me?
There is a desired distribution on the graph, but how is it determined?
What is the y-axis? Id guess at %, but dont think that  makes sense for a continuous line, only for a set of discrete points.
Am I missing something really obvious?

I think these questions could be best answered by the appliance stores and online businesses that sell the grinder cheaper than I do (sorry, had to have a little dig), but will do my best to answer.

Optimum coffee grind for espresso extraction requires various particle sizes.  To illustrate, imagine the flow of water passing through a bucket full of rocks compared to a bucket full of fine sand.  Mix the two together and water will pour through at a different rate.

The "desirable distribution" in the graph was determined by research conducted by the Coffee Brewing Institute and further research from MPE Chicago.

The Y axis is indeed %. Could have made the graph discrete points though in reality, particle sizes also fall between those points.

And thanks to DanQ - that article is a good read.

[vyapada]

Re: Breville BCG800 Smart Grinder

Less fines mightnt be great for espresso but may provide an edge in other brewing methods... interesting.

[cuppacoffee]

Re: Breville BCG800 Smart Grinder

Less fines mightnt be great for espresso but may provide an edge in other brewing methods... interesting.

Turkish? Maybe.

The BNZ produced 1% fines (undesirable). The Breville produced less than 0.1gm of fines (desirable).

You do however need to consider the whole picture. Results from each sieve and those that are the closest overall match of the desirable distribution are the ideal.

[emckissock]

Re: Breville BCG800 Smart Grinder

Thanks for the additional information.

So your testing presumably use various graded sieves to determine particle size. Simple but effective, within a certain margin of error.

Will do some more reading and also have a look at your graph on a better screen than my phone - hard to see the difference between desirable and BNZ on the small screen

[cuppacoffee]

Re: Breville BCG800 Smart Grinder

Simple but effective, within a certain margin of error.

Me...make an error? How dare you! ;D

http://www.coffeeroasters.com.au/products-info.php?id=323

[iaindb]

Re: Breville BCG800 Smart Grinder

http://www.coffeeroasters.com.au/products-info.php?id=323

Holy Cow, you have one of those???