About FluxAnvil
FluxAnvil (焊艺砧) is a bench notebook, not a course. Every card records one soldering or rework technique as it is actually performed: which tip geometry, which tip temperature, how many seconds of contact, which flux class, which alloy — and what goes wrong when one of those numbers is wrong.
Why the cards are parameter-first
Most soldering advice on the internet says "use a hot iron and be quick". That is not actionable. A 2.4 mm chisel at 340 °C with a two-second dwell produces a concave fillet on a 2.6 mm pad; the same tip at 290 °C produces a convex blob that passes a continuity test and fails a thermal cycle. The difference is three numbers, so the cards lead with the numbers and explain the physics afterwards.
How a card is written
Each card starts with a bill of materials and a tool list, records the parameters that were actually used on the bench, and then documents the failure modes seen when a parameter drifts. Where a number depends on board mass — a pad tied to an internal plane, for instance — the card says so explicitly rather than quoting a figure that only works on thin boards. Practice drills are included because none of this transfers from reading.
What FluxAnvil does not do
No product reviews, no affiliate links, no sponsored tools. Where a specific consumable appears it is because that consumable was on the bench for the job, not because anyone paid for the mention. The site carries no manufacturer branding and accepts no vendor material.
Bilingual by construction
Every card exists in English and Chinese, written independently rather than machine-translated. The two versions carry the same parameters, the same drills and the same failure tables; where a term has no settled Chinese equivalent — "dwell", for example — the card uses the English term alongside the Chinese description rather than inventing a translation.
Corrections
If a parameter on a card disagrees with your own measurements, that is worth reporting. Write to [email protected] with the card name, the board you were working on and the numbers you measured; corrections are folded back into the card and the change is reflected in its publication date.