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Machinist / CNC machinist — tasks, one by one
The unit of analysis is the task, not the job title. Each one below carries its direction, whether the judgement rests on evidence or on platform inference, the reasoning, and what it does not establish.
Every task on this page#
Programming machines
Being augmented≈ Platform inferenceTurning drawings into toolpaths and machine code (G-code), usually with CAM software, and choosing tools, speeds and feeds.
Language models can now write machine code for simple parts, but under supervision: in one study GPT-4o produced working code for a sample part while the authors say it cannot yet replace CAM programming and still requires expert supervision, and in another, models succeeded about 80% of the time on simple shapes. The US projects CNC programmer jobs to grow 6%.
Simulation tests on simple parts; they do not show models programming complex parts or being used in real shops.
Setting up machines
Still human-led≈ Platform inferenceMounting fixtures and tools, setting offsets, loading the program and running and adjusting the first part.
No record found shows setup being automated; the US labour statistics agency expects machinists to still be required to set up, monitor and maintain CNC machine tools and autoloaders.
A projection and the absence of a record; they do not measure how setup work is changing.
Running and tending machines
Automating≈ Platform inferenceLoading and unloading parts, watching the machine run, changing worn tools and stopping it when something goes wrong.
This is where official forecasters expect the cut: the US projects CNC tool operator jobs to fall 9% to 2035, saying firms keep expanding CNC tools and robots and that CNC equipment requires programmers instead of machine setters, operators and tenders.
A forecast that also names foreign competition; no record measures how far robot loading or unattended machining has spread.
Inspecting parts
Being augmented≈ Platform inferenceMeasuring parts with gauges, probes or coordinate measuring machines and correcting the machine when they drift out of tolerance.
Measurement is moving onto the machine: a 2026 study found that measuring thread diameter with a probe on the CNC machine in production stayed within the manufacturing tolerance, while the authors say automatic correction routines may still need adjusting.
One feature type on one machine family; it is not evidence of how widely in-machine measurement is used.