Instead of using a marker to test alignment, some grinder allows you to ‘see’ the alignment by using a smartphone to record a video.
The burr was rotated by hands, do not turn the power on since you can’t really see anything even with slow motion video.
I aligned the burr by sanding, but as you can see the burrs are still not 100% aligned. The gap became larger at certain angle, but I would say it’s 80% aligned compared to the unaligned result.
There are obviously differences when pulling a shot, 4 scales finer still yielded the same extraction time and no clump, channeling and tastes really good. Scales are linear to the extraction time: 1 to 5s at 18g dosing, while it was totally unpredictable before alignment.
