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BuyPPE Selection Guide by Process — Welding, Grinding & Machining
Match protection to the hazard, not the job title
One pair of gloves does not cover every shop task. Welding arc flash, grinding sparks, machining chips, weld fume, and noise each demand different PPE layers. This guide walks through hazard-based selection for the three most common fab-shop processes — welding, grinding, and machining — with comparison tables and links to ventilation, respirator, and noise calculators on the Shop Safety Tools Hub.
Hazard-Based PPE — Start With the Exposure
PPE is the last line of defense after engineering controls (ventilation, enclosures, machine guards) and administrative controls (permits, training, job rotation). Before you pick gear, list what can actually hurt you on that specific task: arc radiation, molten metal, airborne particulate, rotating machinery, high sound levels, or chemical vapors.
Match each hazard to a control tier. If you can eliminate the hazard (use a plasma table with downdraft instead of open-air cutting), do that first. If you cannot, add ventilation and then PPE sized to the residual exposure. The tables below assume normal shop ventilation — when fume or noise levels are unknown, run the Welding Fume Ventilation CFM Calculator, Noise Exposure Calculator, and Respirator Cartridge Changeout Calculator before relying on comfort-level guesses. Air tools and compressor sizing: cfm calculator.
Minimum baseline for any metal fab shop: ANSI Z87.1+ safety glasses, closed-toe leather or composite safety footwear, hearing protection when sustained noise exceeds 85 dBA, and task-specific gloves — never one glove type for every process.
Welding PPE Matrix
Adjust shade and respirator level to amperage, process, and confined-space conditions. Outdoor stick on structural steel may need only a filtering facepiece; indoor stainless TIG often needs supplied air.
| Process | Eye / Face | Body | Hands | Respiratory | Other |
|---|---|---|---|---|---|
| MIG (GMAW) | Auto-darkening helmet shade 10–13; clear safety glasses under hood | FR jacket or sleeves; no synthetic outer layers | MIG gloves — dexterity with heat resistance | Natural ventilation often adequate outdoors; add PAPR or half-face with P100 when indoors or on galvanized | Hearing protection above 85 dBA; leather boots; remove jewelry |
| TIG (GTAW) | Helmet shade 9–13; additional face shield for grinding prep | FR sleeves minimum; full jacket for production | TIG gloves — thin goatskin or similar for torch control | Lower fume than stick but chromium/nickel from stainless needs ventilation; respirator for confined booths | Knee pad if long runs; respirator fit-test if required by employer |
| Stick (SMAW) | Helmet shade 10–14; side shields on safety glasses under hood | FR coverall or jacket + apron for overhead | Heavy stick gloves — thick leather, long cuff | Highest fume among common processes; local exhaust or respirator mandatory in enclosed areas | Chipping hammer and wire brush — add face shield when cleaning slag |
| Flux-core (FCAW) | Same as MIG; watch for increased spatter | FR layers; self-shielded flux produces more fume — treat like stick for ventilation | MIG/stick hybrid gloves depending on heat | Self-shielded = significant fume; half-face minimum indoors | Wind affects self-shielded gas shielding outdoors — PPE does not fix bad setup |
| Plasma / oxy-fuel cutting | Shade 5–8 cutting goggles or helmet; face shield for grinding after cut | FR sleeves; spark-resistant apron for overhead plasma | Cutting gloves — heavy leather, insulated if handling hot plate | Metal fume from plasma; oxy-fuel adds combustion products — ventilate and respirator per material | Hot-work permit and fire watch where required — see Hot Work & Fire Watch Checklist |
Process-specific setup calculators: MIG Welding Calculator, TIG Welding Calculator, and Stick Welding Calculator.
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⚡ Recommended Welding & Shop PPE
Core helmet, gloves, and respiratory basics for multi-process fab work
Top Pick
ARCCAPTAIN Auto-Darkening Helmet
- True-color lens for MIG/TIG/stick
- Fast arc sensors for low-amperage TIG
- Wide viewing area for fit-up
- Meets daily welding eye protection needs
- Pair with shade recommendations above
Respiratory
3M Half-Face Respirator + P100 Filters
- Weld fume and grinding dust when LEV is limited
- Cartridge changeout per exposure hours
- Fit-test required for workplace compliance
- Use with ventilation calculations first
- Not a substitute for exhaust in confined booths
Hearing
3M Peltor Over-Ear Hearing Protection
- Grinder and plasma noise often exceed 90 dBA
- Combine with noise exposure calculator results
- Comfortable for long fab shifts
- Wear under helmet when clearance allows
- Replace cushions per manufacturer schedule
- → Respirator Cartridge Troubleshooting
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Grinding & Cutting PPE
Angle grinders produce high-velocity fragments, not just sparks. Disc burst failures send shrapnel outward — eye protection must be impact-rated (Z87.1+), ideally a full face shield over safety glasses. Hearing protection is non-optional: most 4½″ and 7″ grinders exceed 90 dBA at the operator's ear.
Gloves for grinding need cut resistance and heat insulation without so much bulk that you lose control of the tool. Avoid loose cuffs, jewelry, and synthetic clothing — nylon and polyester melt into skin on contact with hot sparks. Before every wheel change, verify RPM against disc rating with the Angle Grinder Disc Speed Calculator — overspeed is a leading cause of disc failure and the PPE you wear is the last defense when a disc bursts.
| Task | Minimum PPE | Notes |
|---|---|---|
| Surface grinding / blending | Z87.1+ glasses + face shield, hearing protection, leather gloves, FR or cotton outerwear | Keep guard adjusted; never grind with guard removed |
| Cutoff / thin-wheel cutting | Face shield mandatory, apron, hearing protection, respirator if cutting stainless or coated metal | Thin wheels are more burst-prone — check max RPM every mount |
| Wire wheel / brush | Face shield, tight-weave gloves (wire strands embed in skin) | Direction matters — wire tips should trail, not dig in |
| Pedestal / bench grinder | Tool rests within 1/8″, eye shields in place, no gloves on small precision work if tangling risk exists | Cracked wheels ring-test before spin-up |
Machining PPE — Chips Hurt, Rotating Parts Kill
Lathes, mills, and drill presses throw continuous chips at high speed. Safety glasses are mandatory; face shields add protection during heavy roughing or when coolant carries chips upward. Hearing protection applies on enclosed CNC cells and air-powered tools even when the cut itself is quiet.
No gloves near rotating chucks, collets, or lead screws. A glove caught in a 3-jaw chuck pulls the entire hand into the spindle in milliseconds. Use bare hands or tight-fitting mechanic gloves only for static work (deburring finished parts, measuring) — never while the spindle is running or the chuck key is in place. Remove rings, watches, and loose sleeves before starting the machine.
Additional machining notes: closed-toe shoes with oil-resistant soles; hair tied back; no lanyards or ID badges that hang into the envelope. For manual lathe work, use a chip hook or brush — never hands to clear long stringy chips while the chuck rotates. FR clothing is less critical than in welding unless you are machining dry without coolant on hot parts.
Process Comparison — Quick Reference
| Hazard | Welding | Grinding | Machining |
|---|---|---|---|
| Eye / face | Auto-darkening helmet + safety glasses | Impact glasses + face shield | Safety glasses; face shield for heavy cuts |
| Hearing | Often 85–95 dBA — earplugs or muffs | Typically 90–105 dBA — muffs preferred | Variable — CNC enclosures can still exceed 85 dBA |
| Respiratory | Weld fume — LEV + respirator as needed | Metal dust — respirator on stainless/coated stock | Mist from coolant — avoid oil mist buildup in enclosed cells |
| Hand protection | Process-specific weld gloves | Leather / cut-resistant gloves | No gloves at rotating contact points |
| Body | FR jacket, sleeves, apron | FR or heavy cotton; no synthetics | Close-fit sleeves; no dangling drawstrings |
| Foot | Leather boots, metatarsal guard optional | Same — hot slag and dropped stock | Oil-resistant soles; steel toe |
Related Safety Tools & Guides
Use these calculators to justify respirator, ventilation, and hearing protection choices with numbers instead of habit.
Arc Flash Boundary CalculatorIncident energy and approach boundary estimates for energized work.Arc Flash Boundary GuideHow boundary results map to approach limits and PPE decisions.Arc Flash PPE Category ChartNFPA 70E category overview with cal/cm² ranges.Welding Fume Ventilation GuideLEV vs dilution CFM thinking for weld fume control.Noise Exposure GuideTWA dose, exchange rate, and hearing protection planning.OSHA Noise Exposure ChartPermissible exposure duration by dBA (Table G-16 style).Respirator Cartridge Changeout GuideChangeout schedules and ESLI — not smell breakthrough.Welding Fume Ventilation CFM CalculatorSize exhaust airflow for booths and general ventilation.
Respirator Cartridge Changeout CalculatorEstimate filter life from exposure hours and contaminant load.
Noise Exposure TroubleshootingWrong dose, NRR derating mistakes, missed sources, action level vs PEL.Noise Exposure CalculatorCheck TWA dose against OSHA/NIOSH limits for grinder and plasma work.
Fall Clearance CalculatorRequired fall-arrest clearance vs available height — OSHA 1926.502 planning aid.
Fall Clearance GuideFree fall, deceleration, harness stretch, and reading manufacturer specs.
SRL vs Shock-Absorbing LanyardClearance and cost tradeoffs for elevated shop work.
Shop Safety Tools HubAll shop safety calculators and guides in one place.
Shop Safety Basics QuizPractice quiz grounded in this PPE guide and related safety pages.
Practice Tests HubAll TestTalkHQ practice quizzes.
MIG Welding CalculatorProcess settings that drive amperage, fume, and PPE shade choices.
TIG Welding CalculatorLow-amperage setups and stainless considerations for respiratory planning.
Stick Welding CalculatorHigh-fume process — pair with ventilation and hot-work planning.
Lockout/Tagout (LOTO) Safety ChecklistIsolate hazardous energy before PPE-dependent service work.Hot Work & Fire Watch Permit ChecklistPermit steps when welding or cutting near combustibles.
Earplugs vs Earmuffs vs Dual Protection — Which hearing layer to wear — plugs, muffs, or dual — after dose math.
When CFM looks fine but the plume still hits the hood, see Welding Fume Ventilation Troubleshooting.
Also see the Sling Angle Load Calculator, Sling Angle Load Guide, Sling Angle Troubleshooting, and Choker vs Basket vs Vertical Hitch for lift planning alongside PPE and hot-work controls.