Temperature surfing the Rancilio Silvia coffee machine [diagram] | swisswuff.ch
PID Retrofit Kit for Rancilio Silvia with Pre-Infusion - helps regulate the temperature of the Silvia within +/- 1 degree Fahrenheit, cutting down the number of variables that can produce suboptimal espresso by one (but it's a big one).
Tech Tips: Temperature Surfing on the Rancilio Silvia - YouTube
Rancilio Silvia Bottomless naked Portafilter and the beak spout
Rancilio Silvia v4 with PID and compak k3 espresso grinder
Rancilio Silvia V3 (Part 2/4) – Temperature Surfing and Microfoam | Purritos.com