A sheet metal worker turns flat metal into ducts, flashing, gutters, enclosures and roofing, then fits it on real buildings. You don't need a degree. Most people start with a high school diploma or GED and learn through a paid apprenticeship (about 4 to 5 years) or a trade-school certificate. This roadmap teaches you why each skill matters, how to practice it, and how to get hired. It begins with shop math, safety and blueprint reading, then moves to layout, cutting, forming and joining, then to HVAC duct fabrication and installation, and finally to welding, CAD, estimating and leading a crew.
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Every stage from beginner to expert, with lessons, practice drills, projects, interview questions and free resources. Free with a Rolearch account.
Stage 1 of 3 · about 10 weeks
Be safe on a job site, do the math the trade needs, read basic drawings, and make clean hand-tool cuts and bends so an apprenticeship program or shop will take a chance on you.
Job site safety (OSHA 10)
Sheet metal has razor edges, heavy lifts, ladders, lifts and hot work. Employers and apprenticeship programs want you to know the basics before you touch anything. Most injuries come from small habits like skipping gloves or lifting badly.
Shop math: fractions, decimals, geometry
Every part starts as numbers. You will add and subtract fractions of an inch, convert to decimals, find perimeters, and use the Pythagorean theorem to find diagonals and offsets. A math slip wastes expensive metal.
Blueprint and shop drawing reading
You build from drawings, so you must know what a line, symbol, dimension and note means. Misreading a drawing means a duct that doesn't fit the ceiling.
Measuring, layout and hand tools
Accurate layout is the core of the trade. A square, scribe and tape measure used carefully make the difference between parts that fit and scrap.
Metals and materials knowledge
Galvanized steel, stainless, aluminum and copper behave differently when cut, bent and joined. Knowing gauge numbers (a lower gauge is thicker) keeps you from using the wrong metal.
Then 2 more stages (about 74 weeks in all) with lessons, drills, projects, 6 interview questions with strong answers and free resources.