The sequence is roughly fixed but the amounts are not. Old strings come off, the fretboard gets cleaned and oiled, new strings go on with a particular wind count at the post, and everything is stretched and tuned. A capo at the first fret and a finger at the last turn the string into a straightedge for reading relief with a feeler gauge. Saddles come up or down with a hex key. Nut slots get a few strokes of a gauged file if the first-fret action is high. Intonation is set by comparing the twelfth-fret harmonic against the fretted note on a strobe tuner and moving the saddle. Then the tech plays it for a minute, which is the real test.
A head camera over the tech's eyes captures the gauge readings, the tuner display, and the hex key turns. Fixed cameras cover the bench from above and from the headstock end. Recording runs through full working days, so the dataset holds a wide spread of instruments, string gauges, and owners' requests.
Delivery is one episode per instrument, segmented into string removal, cleaning, restring, tune and stretch, relief, action, nut work, intonation, pickup height, and play test. Each step is labeled plainly. Episodes carry a pass or fail tag and record reworks, for example a saddle that went back up after the buzz check. Hand, tool, and string tracking are available. We export into your schema and write to your storage.
Collection runs in working shops in five countries, with consented and paid participants and footage cleared for commercial training. We send samples within a business day.