Thor I measured the espresso burrs for thickness at the mounting rim at 3 points.
The dimensions are as follows in mm.
Top Burr
This shows that the burrs are not cut completely flat and have a variance of about 7 micron for the top burr and 5 micron for the lower burr. The SSP filter burrs were better with only a 1 Micron variance on the same burr. It might be that the espresso burrs were an outlier and I did repeat the measurements 3 times with the same results.
All Mazzer burrs I have checked only have a maximum 4 Micron variance on the same burrs. In general though the variance is about 1 micron. They are remarkably accurately made.
As the thinnest Mazzer burr I have measured is 9.443mmand the carriers still have the height clearance for thse, clearly SSP burrs should fit as the set I have are almost 0.2 mm thicker than the thinnest Mazzers.
