The Goon RDA is reading 0.18 ohms and you can't remember whether you built it with Ni80 or Kanthal last time, or what gauge you used. The flavor profile was exactly right at that resistance for the strawberry custard you were running in it. You want to replicate it, but you changed cotton three weeks ago and you're not sure the coils survived that rebuild intact.
A vape build database solves the replication problem. Without it, every re-wick is a re-discover.
The Build Record Is the Replication Reference
Wire and Gauge together specify the coil material — Kanthal A1, Nichrome 80, SS316L, Clapton, Fused Clapton — and the wire thickness. These two fields determine the resistance per wrap. Wraps is the coil geometry — how many times the wire goes around the jig. Resistance is the resulting measurement on the coil checker, not the theoretical calculation. Theory and reality diverge based on leg length, inner diameter, and leg trimming.
The combination of Wire + Gauge + Wraps + Resistance is the complete coil specification. Twelve months from now, when you want to go back to whatever was in the Dead Rabbit the summer you were running Blue Raspberry, those four fields reconstruct the build precisely.
Dual Coil? and Hand Wrapped add the configuration context. A hand-wrapped clapton in dual coil configuration at 0.12 ohms reads completely differently on the thermal ramp-up than a single pre-built coil at the same resistance. The configuration matters for the vape behavior even when the number matches.
The Maintenance Record
Last Coil Change is the maintenance field. Coils in a daily driver RDA should be changed roughly every one to two weeks depending on the juice, the wattage, and the user's sensitivity to coil gunking. The Last Coil Change date tells you whether you're due, and it gives you the interval history when you're trying to figure out why flavor has degraded.
Tank/RDA names the specific hardware — Dead Rabbit V3, Kennedy 24, Wasp Nano — and Type classifies it: RDA (Rebuildable Dripping Atomizer), RTA (Rebuildable Tank Atomizer), RDTA, RDRTA. The type distinction matters for wick-and-fill behavior.
The Juice field links to a juice database — the paired record that carries the e-liquid name, flavor profile, nicotine level, and PG/VG ratio. The pairing closes the build-to-experience loop: not just "what coil was in the Goon" but "what coil was in the Goon when I was running that specific Blue Raspberry at 70W." That's the record that makes consistent vaping experiences reproducible rather than accidental.