<p>I recently bought some SUNLU PLA black filament and was attempting a small print with it and it started to come out in strings and lumps and was incredibly inconsistent. Before this I'd been using some Eryone PLA and those prints were superb, been printing back to back successfully but after using the SUNLU all of my prints since have been having layer separation issues. I've cleaned the extruder, taken off the fan and cleared out the hotend of some wisps of filament, then flushed it through with some more reliable filament which looked better and replaced my magnetic bed sticker with a new one as the adhesion on the initial layer was poor even though the bed looked level. Once I replaced the sticker, the adhesion on the first layer is excellent. I thought I'd fixed the problems so tried an XYZ cube and still getting serious layering issues and the infill is thin.  Any ideas what else I could do to fix this problem? I've put slicer settings below:</p>
<ul>
<li>Hot end temp: 210 °C</li>
<li>Bed temp: 60 °C</li>
<li>Fan speed: 100 %</li>
<li>Print speed: 50 mm/s</li>
</ul>
<p>No custom modifications to the standard Cura profile for the Ender 3.</p>
<p>My filament diameter setting in Cura is 1.75 mm and so is my filament.</p>
<p><a href="https://i.stack.imgur.com/ja49h.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ja49h.jpg" alt="xyz cube" /></a></p>
<p><a href="https://i.stack.imgur.com/so9S3.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/so9S3.jpg" alt="inside xyz cube" /></a></p>

[{'answer_id': 13996, 'author': '0scar', 'author_id': 5740, 'author_profile': 'https://3dprinting.stackexchange.com/users/5740', 'pm_score': 2, 'selected': False, 'text': '<p>This is under extrusion, not delamination. Delamination is the result of the under extrusion.</p>\n<p>It typically happens when the wrong filament diameter has been set in the slicer (a larger diameter than used, e.g 2.85\xa0mm instead of 1.75\xa0mm). Another option is that you accidentally put the printer in volumetric printing mode which is accessible through the display of the printer:</p>\n<p><code>Control -&gt; Filament -&gt; E in mm³ -&gt; Disable</code></p>\n<p>Other solutions may be found in the extrusion process, e.g. the extruder may be skipping.</p>\n'}, {'answer_id': 14464, 'author': 'user3573036', 'author_id': 20814, 'author_profile': 'https://3dprinting.stackexchange.com/users/20814', 'pm_score': 2, 'selected': False, 'text': "<p>Just to update on this, it wasn't directly a configuration setting, it was actually a blockage in the hotend (I suspect because the PTFE tube had become unseated from some black filament that was stated as 1.75\xa0mm but I think it had a larger diameter). After clearing through my hotend with some PTFE tube, I found a disk of the black filament I initially started having this problem with. The issue was resolved once I cleared through the hotend and I now check all my filament with my digital callipers to be sure it's the correct diameter before running it through to save me heaps of pain.</p>\n"}]
['https://3dprinting.stackexchange.com/questions/13992', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/20814/']