Stinsonddog wrote:I agree with this except I will add having a level tamp makes things much easier as well and is more important that the pressure. I will add to the list above dosage as well. We just got a Levatamp from Kafatek and it seems to work quite well. Haven't had one spurting shot. I don't press very hard compared to long ago.
And In my opinion (hoping it's humble), all that has been previously said add up to your puck (and mine...not pointing fingers at anyone in particular) not being "perfect". This means your mass of grinds in that pf is full of non uniformity...full of air pockets, at the very least. Tamping is just another means to control one more variable in the puck formation process. I think the quotes about "no tamping necessary" I actually think this was initially meant as tamp, but pressure is not as critical as we thought years ago. A level ramp is now more critical for a great cup. So, in my mind, tamping is important, no so much the pressure but make it level every time.
Hope that helps.