CNC
Computer numerical control: machines that follow programmed instructions to cut, shape, drill, or finish parts.
Why it matters: CNC connects software thinking with physical results.
Plain-English terms
Manufacturing vocabulary without the gatekeeping.
Use these words to ask better questions in class, at home, in a shop tour, during an interview, or while comparing training programs.
G-code
A common machine instruction language that tells CNC equipment where and how to move.
Why it matters: It helps students see that shop work can include coding and logic.
Tolerance
The allowed amount a measurement can vary while the part still works.
Why it matters: Tiny differences can decide whether a part fits, seals, moves, or fails.
Fixture
A device that holds a part in a stable, repeatable position while work is done.
Why it matters: Good fixturing saves time and keeps work accurate and safe.
Metrology
The science and practice of measurement.
Why it matters: Manufacturing trust depends on proving that parts match requirements.
Deburring
Removing sharp edges or small leftover material after cutting or machining.
Why it matters: A small finishing step can affect safety, assembly, and product feel.
CAD
Computer-aided design software used to create drawings and models.
Why it matters: CAD turns an idea into information that shops can build from.
CAM
Computer-aided manufacturing software used to plan toolpaths and machine operations.
Why it matters: CAM bridges the design model and the machine program.
Apprenticeship
A structured way to learn a trade or technical role while working under guidance.
Why it matters: It can reduce debt and connect training directly to real shop needs.
Additive manufacturing
Making objects by building material layer by layer, often called 3D printing.
Why it matters: It is powerful for prototypes and some production parts, but it does not replace every process.
Subtractive manufacturing
Making parts by removing material through cutting, drilling, grinding, turning, or milling.
Why it matters: Many metal parts still need subtractive precision.
Quality control
Checks and systems used to make sure work meets requirements.
Why it matters: Quality careers protect customers and make shops more reliable.
Setup
Preparing a machine, tools, program, material, and holding method before production starts.
Why it matters: Setup skill is often where experience becomes visible.
Tooling
Cutters, inserts, holders, dies, molds, gauges, and other tools that make production possible.
Why it matters: Tools shape what a machine can do and how efficiently it can do it.
Process control
Keeping a manufacturing process stable so results stay predictable.
Why it matters: Stable processes help shops make good parts repeatedly.
Inspection
Checking a part, product, or process against a requirement.
Why it matters: Inspection turns "looks good" into evidence.