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Slicers.html

@@ -889,6 +889,13 @@
     Disable any "advanced extruder pressure" settings
   </a>
   
+</li>
+      
+        <li class="md-nav__item">
+  <a href="#start_print-macros" class="md-nav__link">
+    START_PRINT macros
+  </a>
+  
 </li>
       
     </ul>
@@ -1356,6 +1363,13 @@
     Disable any "advanced extruder pressure" settings
   </a>
   
+</li>
+      
+        <li class="md-nav__item">
+  <a href="#start_print-macros" class="md-nav__link">
+    START_PRINT macros
+  </a>
+  
 </li>
       
     </ul>
@@ -1442,6 +1456,30 @@ command excessive extrusion rates to the point that it triggers
 Klipper's maximum extrusion cross-section check.</p>
 <p>In contrast, it is okay (and often helpful) to use a slicer's
 "retract" setting, "wipe" setting, and/or "wipe on retract" setting.</p>
+<h2 id="start_print-macros">START_PRINT macros<a class="headerlink" href="#start_print-macros" title="Permanent link">&para;</a></h2>
+<p>When using a START_PRINT macro or similar, it is useful to sometimes
+pass through parameters from the slicer variables to the macro.</p>
+<p>In Cura, to pass through temperatures, the following start gcode
+would be used:</p>
+<div class="highlight"><pre><span></span><code>START_PRINT BED_TEMP={material_bed_temperature_layer_0} EXTRUDER_TEMP={material_print_temperature_layer_0}
+</code></pre></div>
+
+<p>In slic3r derivatives such as PrusaSlicer and SuperSlicer, the
+following would be used:</p>
+<p>START_PRINT EXTRUDER_TEMP=[first_layer_temperature] BED_TEMP=[first_layer_bed_temperature]</p>
+<p>Also note that these slicers will insert their own heating codes when
+certain conditions are not met. In Cura, the existence of the
+<code>{material_bed_temperature_layer_0}</code> and <code>{material_print_temperature_layer_0}</code>
+variables is enough to mitigate this. In slic3r derivatives,
+you would use:</p>
+<div class="highlight"><pre><span></span><code>M140 S0
+M104 S0
+</code></pre></div>
+
+<p>before the macro call. Also note that SuperSlicer has a
+"custom gcode only" button option, which achieves the same outcome.</p>
+<p>An example of a START_PRINT macro using these paramaters can
+be found in config/sample-macros.cfg</p>
 
               
             </article>