Tamp pressure

The downward force applied to the tamper when compressing the puck. Historically cited as 30 lb (~14 kg), but now understood to matter much less than uniformity.

Why it matters — Once the puck is compressed enough to be a solid disc (around 5–10 kg of pressure), extra pressure doesn't add anything — the puck just resists further compression. What matters is that the tamp is level and repeatable.

Good to know

• Focus on a flat, even tamp — not a heavy one. A self-levelling tamper (Decent DST, Pesado) takes the guesswork out.
• Variability shot-to-shot is the real issue. If you always use the same pressure (whatever it is), shots become repeatable.