deploy.

App/wwwroot/HiAPI-docsite/workflows/dynamometer-experiment-sop.html

@@ -99,12 +99,13 @@
 <li>Flute4</li>
 <li>Helix35</li>
 </ul>
-<p>There are no specific restrictions on the number of flutes, helix angle, or rake angle, but these must be accurately recorded along with the tool brand and model.</p>
+<p>Flute count and rake angle are unrestricted, and all three of flute count, helix angle and rake angle must be accurately recorded along with the tool brand and model.</p>
+<p>The helix angle is the one that is not free. A cut set whose cutters all share one helix angle leaves a combination of the shear coefficients unobservable in the bending-moment channel, whatever the data quality, so a training that reads Mx/My needs at least two clearly different helix angles among its cutters — see <a href="../technique/measurement/training-cut-set-design.html">Designing a Training Cut Set</a>. Two stock cutters ground at different helix angles are enough; nothing custom is required.</p>
 <p>A 10 mm diameter is used to avoid tool breakage when cutting difficult materials. The 10 mm standard was established based on Inconel 718 as the safety baseline for this experiment.</p>
 <h2 id="workpiece--toolpath">Workpiece / Toolpath</h2>
 <p>Workpiece dimensions: dynamometer length × width × convenient clamping height (50 mm)</p>
 <p><img src="dynamometer-experiment-sop-img/fixWorkpiece.jpg" alt="fix-workpiece.jpg"></p>
-<p><img src="dynamometer-experiment-sop-img/StraightLineTraining-path.png" alt="training-path"></p>
+<p><img src="dynamometer-experiment-sop-img/StraightLineTraining-path.png" alt="The straight-line training path the experiment cuts"></p>
 <p>Cutting depth is 0.5 mm.</p>
 <p>Toolpath categories are identified by keywords: low, high, through.</p>
 <p>&ldquo;low&rdquo; denotes low spindle speed, &ldquo;high&rdquo; denotes high spindle speed, and &ldquo;through&rdquo; denotes a through-pass.