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There is no Plural of advice; I made some slight changes and will go on to other mistakes if you don't mind.
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neophrema 2020-06-14 20:48:13 +02:00 committed by supermerill
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<body>
<h1>Bed Level Calibration</h1>
<p>This calibration is the first one to do, because it's mandatory to make a print stick on the build plate.</p>
<p>This calibration is the first one to do, because it's mandatory to make a print stick well on the build plate.</p>
<p>This calibration is made to do the fine tuning. Please roughly level the printer before you start, move your nozzle to 0.2mm, then you must be able to move a paper between the nozzle and the plater, but you have to be able to feel the nozzle touching it. With that, you should be able to level the bed with a ~0.1mm precision.</p>
<h2>How it works</h2>
<p>First, select your printer and your default print profile, with the filament profile for a filament you have. Note that this works with your first extruder if you have multiple ones.</p>
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<h2>How to tune your printer</h2>
<p><strong>If your printer has screws</strong>, use them to lift or drop the bed below the patch that need an adjust. Don't forget to print the test after the adjust to verify the compensation. Be careful, most of the time, a half-turn means 0.2mm of height, which equals (often) to the height of the first layer, so&nbsp; if you lift the bed, never turn more than that and prefer adjusting by quarter-turn at most.</p>
<p><strong>If your printer has screws</strong>, use them to lift or drop the bed below the patch that need an adjust. Don't forget to print the test after the adjustment to verify the compensation. Be careful, most of the time, a half-turn means 0.2mm of height, which equals (often) to the height of the first layer, so if you lift the bed, never turn more than that and prefer adjusting by quarter-turn at most.</p>
<p><strong>If it does not</strong>, you have to use the software or modify the firmware configuration, refer to the manual of your printer.</p>
<h2>Advices</h2>
<h2>Advice</h2>
<p>If your filament has a hard time sticking to the bed, you can try to :</p>
<ul>
<li>Increase the first layer width, it will increase the squish (pressure) without any over-extrusion. You can go as far as 200% nozzle width, but 150% should be enough. (Advanced setting, print -> width)</li>
<li>Reduce first layer printing speed, to let it time to stick. (Advanced setting, print -> speed)</li>
<li>You can disable/enable z-hop for the first layer by increasing "only lift z"-&gt; above Z" to a higher value than your first layer height. Enbaling it may pull the filament from the bed and diabling may let the nozzle strke &amp; push the deposited filament, so you have to test and keep the best. (Advanced setting, printer -> extruder)</li>
<li>You can disable/enable z-hop for the first layer by increasing "only lift z"-&gt; above Z" to a higher value than your first layer height. Enabling it may pull the filament from the bed and disabling may let the nozzle strike &amp; push the deposited filament, so you have to test and keep the optimal. (Advanced setting, printer -> extruder)</li>
</ul>
<h2>Notes</h2>
<p>This test uses your current first layer height, but you may want to increase it up to 80% of your nozzle height (before using 'generate') if it's the first time you level your bed, to reduce the risk of a nozzle crash.</p>
<p>After the filament flow calibration, if it appears that the flow was very wrong, you may want to redo this calibration just after.</p>
<p>Most of the calibrations need to done is the right order. This one is the first to do. But you have to have a "good enough" extruder calibration: when you ask for 100mm of filament, that's ~ what the extruder has to scroll into the nozzle.</p>
<p>This test sets the setting "Complete Individual objects" to true, so you may want to reset your print settings afterwards</p>
<p>If after the filament flow calibration it appears that the flow was very wrong, you may want to redo this calibration just another time.</p>
<p>Most of the calibrations need to be done in the right order. This one is the first one to do. But if you want to achieve good results you need to calibrate your extruder, e.g.: if you order for 100mm of filament extrusion, that's exactly the length of filament that the extruder has to push into the nozzle.</p>
<p>This test sets the setting "Complete Individual Objects" to true, so you may want to reset your print settings afterwards</p>
<p>Licence for models used for this calibration test: CC BY-SA 3.0</p>
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