Mazzer burr alignment question

#1: Post by **esmaker32** » March 15th, 2023, 2:16 pm

I've replaced the burrs on my Mazzer Mini E, but unfortunately I only found out later how burr alignment is important. So I decided to check the alignment with the classic marker pen procedure and this is how it looks like now:

Do I have to align or it is should be good like that?

#2: Post by **Jake_G** » March 16th, 2023, 8:10 am

esmaker32 wrote:Do I have to align or it is should be good like that?

What does the top burr look like?
The fact that your wipe goes most the way around, but is is very narrow makes me suspect the top burr is quite out of alignment, and only the edge of the lower burr is making contact, but doing so most of the way around.

Cheers!

- Jake

March 16th, 2023, 12:34 pm

What do you mean? Should I check the top burr with the marker pen also?

#4: Post by **Pressino** » March 16th, 2023, 5:49 pm

IMO the rub pattern looks odd: the burrs appear to have been in contact everywhere except for two places, roughly at the 2 o'clock and 6 o'clock positions. Not sure how that could happen unless both upper and lower burrs are slightly tilted off the horizontal plane, or the burr surfaces themselves aren't exactly flat. Someone with a bit more practical burr alignment experience may chime in.

#5: Post by **Jake_G** » March 16th, 2023, 7:16 pm

esmaker32 wrote:What do you mean? Should I check the top burr with the marker pen also?

Yes

Pressino wrote:IMO the rub pattern looks odd: the burrs appear to have been in contact everywhere except for two places, roughly at the 2 o'clock and 6 o'clock positions. Not sure how that could happe5n unless both upper and lower burrs are slightly tilted off the horizontal plane, or the burr surfaces themselves aren't exactly flat. Someone with a bit more practical burr alignment experience may chime in.

My guess, given the relationship of the low spots to the screws is that those screws are distorting the skirt of the lower burr, pulling it away from the upper burr. The fact that only a small ring on the outside of the skirt is making contact with the upper burr makes me think the upper burr has a tilt to it.

Here is an example of a lower burr that is well aligned to a tilted upper burr:

And here is the same lower burr after correcting the misalignment of the upper burr:

Cheers!

- Jake