SHOP PROCESS GUIDE
How Does the Metal Fabrication Process Work?
By Luft Machine | Updated July 15, 2026
Quick Answer
The metal-fabrication process usually starts by defining what the part or assembly must do. The shop then confirms dimensions and material, plans the operations, cuts or shapes the metal, machines features when needed, fits and joins the components, finishes the work, and checks the result. Repair jobs may also require removing damaged material or rebuilding worn areas before final assembly.
What This Guide Covers
- The main stages of a fabrication job
- Why planning and material choice matter
- How repair work differs from a new build
- How customers can prepare useful project information
1. Define the Need
The first step is understanding the problem. What must the part support, protect, connect, guide, contain, or move? Is the goal to repair an existing piece, recreate a missing part, modify equipment, or build something new? A part, sketch, photo, drawing, or field explanation can all help establish the starting point.
2. Confirm Dimensions, Fit, and Material
Dimensions are only part of the job. The shop also needs to understand clearances, alignment, motion, connection points, surface condition, and the environment where the piece will work. Material selection depends on factors such as strength, wear, corrosion, weight, weldability, machinability, and availability.
3. Plan the Operations
A shop decides which sequence is practical. The work may involve cutting plate, bending sheet, rolling material, machining a shaft or bore, drilling holes, fitting several pieces, or preparing a damaged area for repair. Planning the order helps avoid unnecessary rework and keeps later steps accessible.
4. Cut, Form, and Machine
Material is brought to size and shape. Depending on the project, that may include shear, brake, plasma cutting, rolling, saw work, drilling, turning, milling, or other shop operations. Not every project uses every process.
5. Fit, Join, and Assemble
Components are positioned and checked before final joining. Welding may be used, but some assemblies use mechanical fasteners or a combination of methods. Fit-up matters because small alignment errors can affect how the finished piece installs or operates.
6. Finish and Review
The work may be cleaned, prepared, deburred, blasted, or otherwise finished as the scope requires. Dimensions, alignment, fit, and visible workmanship are reviewed against the agreed need. For a repair, the surrounding equipment condition may also determine whether additional work is appropriate.
How Repair Work Changes the Process
A new build starts with known material. A repair starts with a used part whose wear, cracks, distortion, previous modifications, or contamination may not be fully visible at first. The process may change after cleaning and inspection. That is why clear communication about options and limits matters.
Related: Fabrication | Machining | Part Design and Rebuilding
Sources
American Welding Society: Welder Fabricator Overview
The Aluminum Association: Processing 101
Start with the Part or the Problem
Call Luft Machine at 970.522.9215 or use the contact page to share a sketch, photo, drawing, or repair need.