Manufacturing Setup — Switch to Manufacturing workspace and create a setup (WCS, stock) (intro)

Historical Context & Motivation

For centuries, artisans shaped materials by hand, relying on intuition, jigs, and physical templates to guide their tools. The advent of Computer Numerical Control (CNC) in the mid-twentieth century transformed manufacturing by replacing manual guidance with digital instructions. Yet a CNC machine cannot simply read a 3D model and start cutting — it needs to know where on the physical workpiece the model lives and how much raw material surrounds it. These two questions — coordinate origin and stock definition — form the foundation of every CAM setup, and they are the very first decisions you make when moving from the Design workspace to the Manufacturing workspace in Fusion 360.

The central question this lesson addresses is deceptively simple: once you have finished designing an object in Fusion 360, what do you need to tell the machine before it can make a single cut? The answer lies in two foundational concepts — the Work Coordinate System (WCS) and the stock definition — both of which are configured inside the Manufacturing workspace's Setup dialog.

Core Principles & Definitions

Before diving into buttons and menus, it helps to internalize a handful of foundational ideas that govern every manufacturing setup. Think of these principles as the grammar of CNC communication — without them, the machine cannot interpret your design intentions.

Visual Explanation — The Setup Dialog

The diagram below illustrates the relationship between the Fusion 360 interface and the physical machining environment. On the left, you see the software's Setup dialog with its three critical tabs — Setup (WCS), Stock, and Post Process. On the right, the resulting physical configuration is depicted: a raw material block clamped to a machine table, with the WCS origin clearly marked.

Notice how the dashed lines connect software settings to their physical counterparts. The Setup (WCS) tab determines the position and orientation of the origin on the real workpiece — the pink dot at the corner of the stock where the three colored axes converge. The Stock tab defines the outer boundary of the raw material, shown as a dashed purple rectangle. If you are a sculptor, this is you drawing an outline around the marble block and marking your starting corner before picking up a chisel.

How It Works — WCS & Stock Configuration

Step-by-Step: Switching to Manufacturing

Fusion 360 uses a workspace-based interface where each workspace exposes a different set of tools. When you open a file that was created in the Design workspace, the toolbar displays modeling commands such as Extrude, Fillet, and Revolve. To access CAM features, you click the workspace dropdown in the upper-left corner of the screen and select Manufacturing. The toolbar immediately changes, revealing a new ribbon that begins with the Setup command. This transition is non-destructive — your design data remains intact and fully editable — but it mentally shifts your focus from what the part looks like to how it will be made.

Configuring the WCS Origin

Inside the Setup dialog, the first tab lets you choose the WCS origin. This is the point on your model (and by extension, on the physical workpiece) that will correspond to machine coordinates (0, 0, 0). Common origin choices include the top center of the stock (popular for 3-axis milling because it is easy to probe) and the bottom-left corner (intuitive for parts that sit flat on a machine vise). The orientation of the X, Y, and Z axes can be set to match the model's coordinate system, a selected face, or a custom vector. In practice, the Z axis almost always points upward — away from the table — because CNC mills retract the spindle along Z for safety clearance.

Defining Stock Geometry

The Stock tab offers several modes for describing the raw material. Relative Size Box wraps a rectangular prism around the part's bounding box with a user-defined offset on each side — for instance, adding 2 mm on all sides to represent a slightly oversized aluminum blank. Fixed Size Box lets you type exact width, height, and depth values to match a pre-cut billet you already have in the shop. Relative Size Cylinder and Fixed Size Cylinder serve the same purpose for round bar stock. Finally, From Solid allows you to select an existing body in the design as the stock shape — invaluable when machining a casting or a 3D-printed blank with an irregular form.

Detailed Breakdown — Stock Mode Comparison

Choosing the correct stock mode is analogous to choosing the right canvas size before painting — too small and you clip your composition; too large and you waste material and machining time. The diagram below shows the five stock modes side by side, each wrapping around the same example part.

Worked Example — Setting Up a Sculptural Relief Panel

Imagine you have designed a 200 mm × 150 mm × 25 mm sculptural relief panel in Fusion 360's Design workspace. The panel features organic, flowing forms inspired by Art Nouveau motifs. You plan to CNC-mill it from a slab of walnut. Let us walk through the complete setup process.

WCS Origin Placement — Pros & Cons

Where you place the WCS origin has practical ramifications that extend beyond software convenience — it affects how quickly you can set up on the machine, how reproducible the alignment is, and whether your G-code coordinates will be positive or negative. The table below compares four common origin placements for 3-axis milling.

Connection to Advanced Manufacturing Concepts

The basic setup covered in this lesson — a single WCS with a simple stock block — is sufficient for straightforward 3-axis milling jobs. However, as your designs grow more complex, you will encounter scenarios that demand more sophisticated configurations. Multi-axis machining (4- and 5-axis), multi-setup workflows (flipping the part to machine both sides), and advanced stock definitions (using a previous operation's result as the new stock) all build upon the fundamentals introduced here.

As a Visual Arts student, you may eventually explore multi-axis sculpting — carving a piece from multiple angles using a 4th or 5th rotary axis. In those workflows, the WCS setup becomes even more critical because the machine must know how each rotation relates to the original coordinate system. Mastering the single-setup fundamentals in this lesson gives you the vocabulary and mental model needed to tackle those advanced configurations with confidence.

Practice Problems

Lesson Summary