Role guide · Machining
The machine shop has the strangest dress code in industry: less protection at the machine, not more. Gloves are banned at running spindles, sleeves must hug the wrist, and the most protective thing a machinist wears is the absence of anything a chuck could catch.
The job
The paradox rule first: at running lathes, mills and drills, most shops prohibit gloves — a glove caught by a chuck pulls the hand in faster than anyone can react, and entanglement injuries outrank the cuts gloves would prevent. Hands go bare (or thin-fitted where a shop's assessment allows), and cut-rated gloves come out only for handling stock, swarf and tooling with the machine stopped. The same physics writes the clothing rule: fitted kit with snug cuffs, no rings or watches, no lanyards, hair secured — the precision-corridor discipline in personal form.
The constants: eye protection at grade F is the never-off item (swarf and coolant fly), hearing protection per the shop's zones, and S1P footwear against dropped stock and the swarf that carpets machine-shop floors — swarf-proof soles matter more than most trades' midsole arguments. Coolant is the slow hazard: soluble oils drive dermatitis and saturate clothing — nitrile for coolant-wet handling, barrier cream culture, and workwear in proper rotation so saturated kit gets retired before it becomes a skin-contact fixture. Aprons take the splash at manual machines; polycotton weights that launder hot survive the life.
The list
| Item | The spec | Why |
|---|---|---|
| Fitted kit, snug cuffs | No loose anything near rotation | The entanglement rule is absolute |
| Eye protection | Grade F minimum, worn always | Swarf and coolant are constant emitters |
| Gloves (machine stopped) | Cut B–D for stock, swarf, tooling | Never at a running spindle |
| Footwear | S1P, swarf-resistant soles | The floor is metal splinters |
| Rotation workwear + nitrile | Coolant management | Dermatitis is the trade's slow injury |
Questions
At running machines, a glove caught by rotating tooling drags the hand in — entanglement is faster and worse than the cuts gloves prevent, so shops prohibit them at the spindle. Cut-rated gloves are for handling stock, swarf and tooling with the machine stopped; the task card per machine should say which.
Fitted workwear with snug cuffs (nothing a chuck can catch), constant grade-F eye protection, S1P footwear against dropped stock and floor swarf, hearing protection in zoned areas, and no rings, watches or lanyards. The dress code is designed around rotation, not around looking industrial.
Repeated contact with soluble oils drives industrial dermatitis — one of machining's commonest health problems. Nitrile gloves for coolant-wet handling, barrier cream and washing routines, and rotating workwear before it saturates are the controls; a coolant-stiff overall worn all week is the failure mode.
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