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Add z offset video

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lawgicau
2021-07-13 10:52:42 +10:00
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calibration.html
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</ul>
<p>The following picture shows Z offset for a BLtouch. You can clearly see the vertical difference between the probing point (tip of BLtouch) and the tip of the nozzle.</p>
<a href="#" data-featherlight="img/zoffset.jpg"><img class="thumb" src="img/zoffset.jpg" /></a>
<p>If <b>BABYSTEP_ZPROBE_OFFSET</b> is enabled in Marlin, setting the Z offset can easily be done as the first layer goes down. Don't forget to save to EEPROM afterwards. This process is also depicted in the video at the top of the page.</p>
<p>If <b>BABYSTEP_ZPROBE_OFFSET</b> is enabled in Marlin, setting the Z offset can easily be done as the first layer goes down. Don't forget to save to EEPROM afterwards. Newer versions of Marlin also have a Z offset wizard that can be included when you compile. I have a dedicated video for this:</p>
<iframe width="480" height="360" src="https://www.youtube.com/embed/fN_ndWvXGBQ" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<p>Another advantage of some ABL systems is that once the Z offset is set, you can interchange build surfaces of various thicknesses, with no changes needed for a successful first layer. Assuming the probe is triggered the same way on the bed surface, the Z offset is applied to this trigger point and the first layer height should be the same. On a manually levelled bed, the four corner knobs would need to be turned in unison to raise or lower the bed in accounting for thickness of the new build surface.</p>
<h2>First layer gcode generator</h2>
<p>The following form will create a series of five squares that you can use to live level your bed or set the Z offset. It is quick to print and features one square in the middle of the bed, with four others in the corners. You can use these to turn the levelling knobs in each corner until they are consistent, or ensure your ABL system is working if you have one in place.</p>