samuellaw178 wrote:Same/similar grinder, same TDS/EY, same coffee, same extraction metrics (contact time, brew ratio, and what have you), and the TDS/EY is likely still not a good predictive indicator that the shots will taste the same (in relation to the 'standard/control shot' with the same parameters).
At least in case of Niche, Niche will have noticeably different enough particle size distribution just because of all the play in shaft and outer burr carrier. And its not little play, its visible by the eye play. So the burrs will "walk" around as they are grinding and bell curve of particle size distribution will be stretched out. Conical burrs don't self center, but rather "walk" and wobble unless they are constrained and you can see that in action if you have hand grinder with radial play in center burr.