I'm new when it comes to working with my Rio SJ. I appreciate all the great info on the Mazzer's topics here and other website. Particularly with the "Mazzer mini design thoughts", I find it was very helpful to do the two types of modification; however is there a mod for the lower burr holder to make it a clean swipe out the chute?

WHY...
As I clean up the grimes around the lower burr holder and check for any remaining spots, I noticed there is at least a 1.0mm clearance from the holder swipe to the chute base. [note: I only able to remove the upper burr components and lower burr because of my limited tools at the time. Thus, I did not adjust the lower burr holder from the original installment. I said that because the machine does not look like it was clean before...eeey] I suspect even with great centrifugal force created by the motor that the holder can't sweep clean from the base of the chute. [not to mention the oil based of the grinds create much friction] So I test it out with the minute-rice "cleaner" and gave it a run. I figured its clean up the finer grime out and see if there is any remain white rice. And that is where I confirmed the residue particles sat around the base of the chute canister.

So if we are so concern about making a cleaner sweep at the doser level and not mixing old grinds with new one. Is there or should there be a concern on the collection of old grinds remained at the base? [thought about cleaning the base with compressed air can seems cumbersome on a daily basis]

Appreciate your share of thoughts and suggestions.

Hello Simon, If I understand your question, you are asking about the radial clearance to the blower fins on the lower burr carrier. On my SJ, there is about the same clearance as on yours. The vanes blow/throw the grind through the chute. And, yes, the grinds do accumulate there over time.

The grinder forum threads are a very good place to learn about cleaning and maintenance. My life is better for them!
Happy Holidays!
-Richard

Yes espressme.
Perhaps, if it is not too much trouble, can you re-direct me to the link on modification of the chute?
I can't seem to find the right posting. I just think the amount of coffee remains at around the base is more than ideal. And also depends on the type of coffee beans, I'm sure if the beans are more oily based the amount of grime is greater over shorter period. As I can tell when I was cleaning the machine.
Here is the photo I took after I cleaned the area.




PS-Thanks to MOD for enhanced my posting.

If you remove the finger guard, it's easy to sweep the chute with a brush. I use these acid brushes, available at any paint or hardware store:


From Best $1.25 I've spent on my grinder

Keep in mind that Mazzers are commercial grinders. We've applied various workarounds to adapt them to low-volume use, but these are compromises of their design intent.

Dan,
Thanks again. But what about around the base? When I open the upper burr, I can see the base around the lower burr has quite a few collections as well.
Or is this where you said, "Keep in mind that Mazzers are commercial grinders. We've applied various workarounds to adapt them to low-volume use, but these are compromises of their design intent."
And that is as good as we can it. [minus the option of unwinding the upper burr component and clean it after each daily use.]

Hello Simon,
To try to answer, We use the small brushes to dust/sweep the particles from around the lower burr carrier by sweeping and turning the burr carrier by hand. The flattened brush handle part makes it easy to do. I also clip off the ends of the bristles to make a stiffer brush.
I have also used a needle in a stick to clean stuck on bits. It is hard to get under the burr carrier with any type of brush. I then run the grinder without beans to blow the loosened grains out of the chute.
I myself would prefer not to disassemble the burr carrier from the motor.

A few grains stuck to the chute will not break a good roast but allowing build up over a long time will...
Cheers
-Richard

SimonSoCal wrote:But what about around the base? When I open the upper burr, I can see the base around the lower burr has quite a few collections as well.

If the grinder is used, I agree it's worth a very thorough cleaning, including the years of ugly grime that can accumulate underneath the burr carrier. Deep cleaning of very dirty Mazzer Super Jolly shows how to remove it:


Also see Used Mazzer Super Jolly Cleaning

Apart from this one-time cleaning of an (ab)used grinder, I think a regular maintenance cleaning suffices because, I assume, the few grams of trapped grounds are not mixed with freshly ground coffee. If you're worried about such fastidiousness, high-volume commercial grinders like Mazzer/Compak/La Cimbali/etc are not a good choice. The Baratza Vario, which has very very low grounds retention, would be a better choice.

I found the same thing, the Super Jolly held about 2g under the lower burr carrier.

I posted this mod on TMC which virtually cures the problem.

http://www.toomuchcoffee.com/index.php?...pic&t=8225

It is easy and uses a £3 standard part, you need to be able to countersink.