puchang wrote:I couldn't judge if the frame is indicative of side channeling or no because I'm not 100% sure about its definition. What do you think?
Side channeling is water taking a shortcut around the puck through a gap created by the loss of adhesion with the basket. I suspect it because of the blonding beginning "here and there" at the perimeter. Rapping the portafilter to knock down grounds can cause it, uneven distribution, or poor edge tamp. A snug fitting piston or Staub four corner tamp to press on the edges can help.






