Notes from the desk.
How Scalpel works, and what we learned building it.
2026-10-144 min readSizing by risk: the share count at the instant you pressWhy Scalpel works out your size from the stop at the moment you fire, and how the Risk (Cents) preset keeps every trade at the same dollar risk.2026-10-145 min readWhy Scalpel's stops live in the app, not on the bookThe working stop, the catastrophe net and the take-profit: how they arm, how you drag them, and the one trade-off you should know about.2026-10-146 min readReading the Level 2 montage, and what it can't tell youA tour of the mirrored book, price tiers, icebergs and the read line, with the results of replaying every read over recorded sessions.