A practical rule for deciding whether a new Claude capability should be a skill (prompted procedure) or an MCP tool (deterministic lookup/action), worked out while adding a "daily knot" feature to a SecondBrain morning briefing.
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Knife Steels Explained: Hardness, Toughness, and Edge Retention
Why stainless resists rust, why carbon steel earned its reputation for strength, and how modern powder steels like Elmax and MagnaCut collapsed the old trade-off, with a look at the steels Leatherman, Opinel, Victorinox, and Fallkniven actually use.
read moreE-Shape Open Chord Variations
Every common variation on the open E chord -- sus4, minor, sevenths, sixth, add9 -- each one a single change from the base shape, with fingering and intervals side by side, and a note on how this shape becomes the movable E-shape barre chord.
read moreD-Shape Open Chord Variations
Every common variation on the open D chord -- sus2, sus4, minor, sevenths, sixth, add9 -- each one a single change from the base shape, with fingering and intervals shown side by side.
read moreA-Shape Open Chord Variations
Every common variation on the open A chord -- sus2, sus4, minor, sevenths, sixth, add9 -- each one a single change from the base shape, with fingering and intervals shown side by side.
read moreSupports that peel off: a Bambu Studio profile that stops fighting back
The nine Bambu Studio support settings I change from stock for a 0.4mm nozzle at 0.16mm layer height, and why each one matters when you are trying to get supports off without damaging the part.
read moreDigital Design 03: Metastability
Why a flip-flop can stop between the rails, why two gates reading that voltage can disagree with each other, and why the bug that follows never reproduces.
read moreMulti-tool or separate tools
A Knipex Cobra XS, an Opinel No 08 and a bit driver measured against a Leatherman Wave+ on weight, price and capability.
read moreSoC Intermediate 04: RTL synthesis and timing closure
Why a design can pass sign-off timing and still fail in silicon, and the machinery that decides it: what synthesis optimises, what static timing analysis actually proves, SDC exceptions and the damage they hide, reading a timing report, RTL versus tool fixes, and multi-corner multi-mode closure.
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