As a Local 17 apprentice
What a Sheet Metal Worker Is
Sheet metal workers are essential to the building and construction industry. In our union shops, they meticulously lay out, fabricate, and assemble metal products. Their expertise extends to fieldwork, where they install these products in various building projects.
What sets the sheet metal trade apart is its comprehensive process—from transforming raw materials into finished products to their installation and maintenance. In the workshop, sheet metal workers accurately assess material requirements based on blueprints and job specifications.
Using a combination of mathematics and advanced tools, such as plasma and laser cutters, along with traditional tools like hammers and drills, they skillfully craft metal into the required products. Once fabricated, these parts are shipped to construction sites where they are installed according to precise plans by sheet metal workers.
In addition to fabrication and installation, these professionals are involved in the maintenance sector, focusing on preventive care, repairs, and the testing and balancing of HVAC systems.
Commonly produced items include HVAC systems, metal roofs, kitchen hoods, gutters, and decorative architectural features. The field is dynamic, challenging workers to use their hands and analytical skills to visualize, design, and implement complex mechanical systems.
Our apprenticeship program is an “earn while you learn” initiative. It offers full-time paid work combined with related classes to ensure comprehensive training and development in this growing field.

Benefits
Our apprenticeship program, co-sponsored by Sheet Metal Workers’ Local 17 and the Sheet Metal & Air Conditioning Association of Boston, offers numerous benefits. As an employee and union member, you’ll enjoy comprehensive medical, dental, and optical coverage, along with attractive annuity and pensions.
Outline of Apprentice Training
First Year
OSHA 30, Hoisting & Rigging, BOOM & Scissor lift certification, issued A Massachusetts apprentice license, registered as a DAS apprentice. Learn basic sheet metal layout, drafting, and essential math skills. Apprentices learn the proper use of calculators, soldering techniques, and the operation of sheet metal tools and machinery.
Second Year
Apprentices will gain expertise in trade materials, blueprint reading, and drafting. Learning to read plans and specs. Sketching different views-plans and side elevations. Training also encompasses pattern development, sheet metal fabrication, field measurement and specialized courses in fire and damper handling.
Third Year
Training also encompasses measuring ductwork and creating cut lists. Reading plans and laying out hangers. 45 degree offset calculations. Introduction to welding.
Fourth Year
Field sketching. 2 week training dedicated to welding curriculum and/or foreman training. Exploring the different sheet metal career paths.
Fifth Year
Two week class preparing for the J-1 license exam.
