 <p>Found it.</p> <p>No masks involved.</p> <p>I took the <code>Path</code> and wrapped a <code>Group</code> around it:</p> <pre><code>&lt;s:Group blendMode="layer"&gt; &lt;s:Path id="connector" ... /&gt; &lt;s:Ellipse id="hole" blendMode="erase"&gt; </code></pre> <p>I set the <code>blendMode</code> to "layer" and added an ellipse <em>after</em> the path with blendMode <code>erase</code></p>