I’ve noticed something odd with my grinder - an Atom 75E. I think it’s odd anyway, there may be a simple explanation.
When I grind on demand with a full hopper, I get 18g in under 3 seconds, and produce a 36g shot from it in about 30 seconds.
When I single dose, it’s surprisingly good at spitting out the same 18g I put in, just taking a bit longer - say 8 seconds. However, shots run much faster, producing 36g in about 20 seconds.
No change to grind setting, and when I move back to on demand with a full hopper it goes back to c30 seconds.
@DavecUK did a very helpful review on the grinder including the conclusion that it’s not well suited to being a single doser - I’d assumed this was more because of not getting the same weight out as in, even with the puffer, but maybe I’m getting a ‘different’ 18g out from the 18g I’m putting in, and am getting some old coffee in my portafilter that’s making run fast?
In practice, this isn’t an issue for me - I’m happy to grind on demand and purge, but I’m just interested in views on why I might be experiencing this.