Let's walk through adding a with a custom symbol.

Locate the component, and navigate to its . Set Symbol Iso Type to VALVE . Set Symbol Key to VAIV .

Verify spelling and case sensitivity in both the Spec Editor and the XML file. 2. Disconnects or "Leaks" in the Isometric Sheet

Imagine a lead engineer who spent weeks modeling a complex refinery unit. Everything looked perfect in 3D—pipes were routed, and high-performance custom valves were meticulously placed. But when they hit "Generate Isometric," the result was a disaster: the valves had completely disappeared from the drawing, leaving the pipe lines disconnected and floating in white space. The culprit? A missing . How the SKEY Works its Magic

In this example, the skey file defines a valve symbol with a circular shape, a diameter of 20 units, and a red fill color. The symbol also has a label "VALVE" with a font size of 12.

Are you struggling with a specific component mapping, or do you need a list of the ?

: This XML file maps the SKEY to a specific AutoCAD block name. It supports wildcards (e.g., matches any elbow SKEY) to simplify mapping. IsoSymbolStyles.dwg

Example configuration (step-by-step)

Identify the component class (e.g., EL for Elbow, VB for Ball Valve, FL for Flange).

: Usually, the first two letters represent the component type (e.g., FL for Flange), and the next two define the end connection or specific subtype (e.g., SC for Screwed).

Without correct SKEY mapping, two designers might model the same ball valve with different spec parts, resulting in different isometric symbols. Standardizing SKEYs ensures that Valve-001 looks identical on every drawing, regardless of who modeled it.