Now, Ive been still getting used to how much coffee to put in the portafilter (see http://coffeesnobs.com.au/YaBB.pl?num=1273719482/2#2) after moving from the famously overdosing Sunbeam EM6910 to an Expobar Megacrem 2-group.
I suspect Ive been overdosing, and after recently upgrading to a dosing grinder and actually checking how many grams Im dosing seems to confirm that.
Underdosing heavily, compared to usual, results in the attached pic, which also seems to confirm that my usual dose is too much. The faint lines from the group head are usually very ridged, so again, Im guessing that Ive been overdosing.
Would appreciate any knowledge from wiser heads, in particular if the ridging is a result of overdosing or whether different machines create different patterns (I am assuming a correct dose would result in a flat profile on all machines).

I suspect Ive been overdosing, and after recently upgrading to a dosing grinder and actually checking how many grams Im dosing seems to confirm that.
Underdosing heavily, compared to usual, results in the attached pic, which also seems to confirm that my usual dose is too much. The faint lines from the group head are usually very ridged, so again, Im guessing that Ive been overdosing.
Would appreciate any knowledge from wiser heads, in particular if the ridging is a result of overdosing or whether different machines create different patterns (I am assuming a correct dose would result in a flat profile on all machines).



(Or ya have a bloody big nut from the shower screen pushing down - change it fpo

The variance between brands, and even between machines makes this impossible. As AM points out, the presence of a bolt holding on the shower screen will change the results of the 5¢ test. The bean type, grind, and roast level will change the volume of a gram measure as well. (Ask me about standards on Italian motorcycles and youll get the same answer. ;D)
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