{ "source": "Cooked Index — occupational AI risk register", "page": "https://cookedindex.com/jobs/milling-and-planing-machine-setters-operators-and-tenders-metal-and-plastic/", "methodology": "https://cookedindex.com/methodology", "notice": "Verdicts are re-examined as evidence accumulates. Re-fetch before relying on this; the page above always carries the current score.", "scored_at": "2026-08-11", "model": "claude-opus-5", "occupation": { "title": "Milling and Planing Machine Setters, Operators, and Tenders, Metal and Plastic", "soc_code": "51-4035", "category": "Production", "us_employment": 12460, "median_annual_wage": 52800 }, "verdict": "EXPOSED", "risk_resistance": 35, "contested": false, "near_boundary": false, "dimensions": { "task_resistance": 10, "embodiment": 15, "liability_shield": 1, "trust_premium": 3, "judgment_accountability": 6 }, "reasoning": { "task_resistance": "Writing and proving out the program, offsetting for tool wear, and running the second part of a 500-piece order are all things a CAM package plus a probe cycle already does or will do soon — but indicating a casting in a vise to half a thou, shimming a warped plate, and deciding a horn-sounding chatter means feed up not down still needs a person at the machine, which is why this sits at 10 rather than down with pure tenders.", "embodiment": "You are standing at the machine in coolant mist and chips, hauling vises and angle plates, reaching into the enclosure to change an endmill and re-touch off, deburring and gauging parts with mics and bore gauges — 15 reflects a shop floor that is physically demanding but still a fixed, enclosed, guarded workcell rather than a field or a rooftop.", "liability_shield": "There is no state licence to run a mill; a shop can put someone on a Bridgeport or a VMC with in-house training, and when a part goes out of tolerance the liability lands on the shop's quality system and its AS9100/ISO certification, not on your personal ticket — hence a 1, with the only sliver being customer-mandated operator qualification records.", "trust_premium": "The customer buys a print-conforming part with a first-article report; they neither know nor ask who set the job, so the only relationship value is the shop foreman who knows you can be trusted with the tricky prototype work and hands it to you instead of the new hire.", "judgment_accountability": "Most of the shift is governed by the traveler, the setup sheet, the tooling list, and the inspection frequency, and the calls you do own — bumping a feed override, scrapping a part rather than reworking it, stopping a run when a tool breaks — are real but bounded and reviewable by the next inspection, which is what separates a 6 from the discretion of a process engineer signing off on the method." }, "rationale": "The real threat here isn't chatbots — it's the CNC and automation curve that has been shrinking this occupation for decades, now accelerated by AI-assisted CAM programming, adaptive toolpath generation, and automated in-machine probing and inspection. What resists is the physical half: fixturing odd parts, dialing in a stubborn setup, hearing a chatter problem and fixing it, changing worn tooling, and running short-run or prototype jobs where writing the program takes longer than cutting the part. Tenders who mostly load, unload, and watch are the most exposed tier; setters who own setup, metrology, and process troubleshooting hold on much longer.", "outlook": "Employment keeps eroding as automated cells and AI-assisted programming absorb high-volume tending, while a smaller core of setup, fixturing, and multi-axis troubleshooting specialists stays in demand and paid better.", "what_would_raise_it": { "levers": [ { "dimension": "task_resistance", "change": "Genuine two-tier structure: if lights-out cells and robotic load/unload absorb the tending tier, the residual occupation is setup, fixture design, metrology interpretation and chatter/thermal troubleshooting on short-run and prototype work — the part of the job where AI-generated CAM still needs a human to prove out the first article. Watchable signal: BLS/employment mix shifting toward 'CNC setter' and 'machinist-programmer' titles while 'machine tender' postings disappear.", "plausibility": "already happening", "would_add": 4 }, { "dimension": "embodiment", "change": "Growth in aerospace/defense and medical hardware work on large, thin-walled or exotic-alloy parts (titanium, Inconel, castings with variable stock) where fixturing and workholding cannot be standardized and each setup is bespoke; robot cells remain economic only above a lot-size threshold. Watchable: DoD/DPA industrial-base funding aimed at forging, casting and large-structure machining capacity.", "plausibility": "plausible", "would_add": 2 }, { "dimension": "liability_shield", "change": "Named-operator traceability rather than licensure: AS9100/NADCAP and FDA 21 CFR 820 audits already require identified personnel to sign off first-article inspection and process qualification records. If prime contractors or FAA/FDA auditors explicitly refuse AI-generated in-machine probing data as the sole basis for FAI acceptance and require a named human to certify the dimensional report, this rises from near-zero. Watchable: AS9102 FAI form revisions, NADCAP audit checklists addressing automated inspection.", "plausibility": "plausible", "would_add": 4 }, { "dimension": "judgment_accountability", "change": "As the setter's remaining calls become the expensive ones — scrap or rework a $40k forging, accept a borderline GD&T deviation, stop a run on a tool-wear signature — and as those calls stop being buffered by a supervisor in thinner-staffed cells, ownership concentrates. Watchable: MRB (Material Review Board) authority formally delegated to lead setters in quality manuals.", "plausibility": "plausible", "would_add": 3 } ], "ceiling_note": "No realistic route to a trust premium: buyers of machined parts pay for dimensional conformance to print, not for human hands, and no customer specifies human-cut parts. Liability shield is capped well below professional-licensure levels — machining has no state board, no personal malpractice exposure, and quality signatures sit with the firm's quality organization rather than the operator. Even with every lever, this occupation stays in the exposed-to-mixed band and continues shrinking in headcount; the levers change who survives inside it, not the total." }, "adjudication": null, "employment_history": { "points": [ { "y": 2017, "emp": 17820, "wage": 42650 }, { "y": 2018, "emp": 19440, "wage": 43590 }, { "y": 2019, "emp": 18730, "wage": 43210 }, { "y": 2020, "emp": 15760, "wage": 43150 }, { "y": 2021, "emp": 14920, "wage": 46850 }, { "y": 2022, "emp": 15480, "wage": 46870 }, { "y": 2023, "emp": 13990, "wage": 47200 }, { "y": 2024, "emp": 13810, "wage": 48310 }, { "y": 2025, "emp": 12460, "wage": 52800 } ], "from": 2017, "to": 2025, "change_pct": -30.1, "comparable_from": 2019, "spans_soc_revision": true }, "pivots": [ { "slug": "sheet-metal-workers", "title": "Sheet Metal Workers", "verdict": "SAFE", "risk_resistance": 67, "median_wage": 61800, "overlap": 80, "skills_to_close": [ "Installation", "Instructing", "Management of Personnel Resources", "Equipment Maintenance" ] }, { "slug": "crane-and-tower-operators", "title": "Crane and Tower Operators", "verdict": "SAFE", "risk_resistance": 67, "median_wage": 68080, "overlap": 79, "skills_to_close": [ "Equipment Maintenance", "Operation and Control", "Repairing" ] }, { "slug": "industrial-machinery-mechanics", "title": "Industrial Machinery Mechanics", "verdict": "SAFE", "risk_resistance": 67, "median_wage": 64520, "overlap": 79, "skills_to_close": [ "Equipment Maintenance", "Repairing", "Troubleshooting", "Installation" ] } ], "license": "https://cookedindex.com/terms" }