A shed workshop is easy to plan around machines and benches. Dust is easier to forget. This guide explains what the US Occupational Safety and Health Administration (OSHA) says about wood dust, and turns it into a checklist for a small workshop. The figures are workplace guidance written for employers, not hobby-shop rules, and this is general information, not medical advice. Ask a doctor about symptoms that keep coming back.

This guide is based on the public source listed below. We have not tested any tool, plan or store. If you are planning a shed, see our guide to shed planning rules in England first.

What wood dust can do

Source: OSHA, Woodworking eTool, wood dust page. Last checked: 17 October 2026.

  • OSHA lists skin irritation and allergic dermatitis, often from irritant compounds in sap, and breathing problems such as asthma, hypersensitivity pneumonitis and chronic bronchitis.
  • People can become sensitised, so reactions can get worse with repeated exposure, even at lower amounts.
  • Certain hardwoods (oak, mahogany, beech, walnut, birch, elm and ash) have been linked to nasal cancer in woodworkers, especially with high exposure. Western red cedar is noted for causing asthma.
  • The page cites workplace limits: 15 mg per cubic metre of total dust (5 respirable) as an 8-hour average for OSHA, 1 mg per cubic metre recommended by NIOSH, and 0.5 mg per cubic metre for western red cedar from ACGIH. These are workplace limits, and the page gives no advice for home shops.

Which machines make the most dust

OSHA says sanders, shapers and routers produce the most dust. Saws, band saws, jointers, planers, moulders and lathes also need dust control.

How dust control works

  • Collect at the machine. OSHA's main method is local exhaust ventilation, with the hood as close to the machine as possible.
  • Keep it working. Clean ducts and collectors, check for damaged ducts and inspect fan belts. The page suggests keeping air speed in the duct at about 2,500 to 4,000 feet per minute so ducts do not clog.
  • Do not let it pile up. Housekeeping matters because dust build-up is also a fire and explosion concern (OSHA covers that in a separate section we did not read).
  • Respirators. The page does not discuss them, so we give no advice on masks here.

A workshop planning checklist

  1. List the machines you will use and mark the dusty ones: sanders, routers and shapers first.
  2. Plan where the dust collector or extraction will connect to each machine, and keep ducts short and undamaged.
  3. Plan how you will clean up: regular sweeping and collection rather than letting dust settle.
  4. Know which woods you will work with, and be extra careful with oak, cedar and the other woods named above.
  5. Check the planning, size and electrical rules for the building itself before you buy plans or materials.
  6. If you buy plans online, check what the seller says about materials, tools and returns. Our shed plans guide and woodworking plans guide cover that.

What we could not confirm

  • Respirator choice for hobby use, hobby-shop ventilation sizes and UK or EU workshop dust rules (not read).

Source: OSHA, Woodworking eTool, wood dust.