<p>I'm getting this printing where it's not laying the plastic down very well. What could be causing this? I've printed with these settings before, and it turned out just fine. If you need any other info to properly diagnose this, let me know.</p>

<p>I'm using a Robo3D R1+</p>

<p>[<img src="https://i.stack.imgur.com/cT7dV.jpg" alt="Bad Print[1]"></p>

[{'answer_id': 4579, 'author': 'Fernando Baltazar', 'author_id': 4454, 'author_profile': 'https://3dprinting.stackexchange.com/users/4454', 'pm_score': 3, 'selected': True, 'text': "<p>I´ve seen this in my Prusa due two parameters that may vary your results depending on climate if your printer has not a temperature chamber or having a mechanical issue too.</p>\n\n<p>Lack of extrusion is due a cold filament which it can't reach the melting temperature due a fast extrusion feed; I mean in normal conditions we can print @70&nbsp;mm/s with 195&nbsp;°C but on wet or colder days is not possible so I need to slow down the speed (feed rate) with 10&nbsp;% less than normal to get @60&nbsp;mm/s or less until get a good flow with out modifying the G-code. If I try to print faster on normal conditions I will get the same lack of material due 195&nbsp;°C is a low temperature (this is an example).</p>\n\n<p>If I set the temperature 200&nbsp;°C or 210&nbsp;°C I will get a better flow and also print faster than @80&nbsp;mm/s (not affected too much on climate on 100&nbsp;% feed rate).</p>\n\n<p>For first layer I´m using an speed of 40&nbsp;mm/s to allow a good adhesion and Z height 90&nbsp;% of layer height (0.22 typically or 0.18).</p>\n\n<p>Mechanical side: The extruder is not feeding all the filament due a missing pression on the traction gear (filament slip).</p>\n"}, {'answer_id': 10126, 'author': 'poopym', 'author_id': 16629, 'author_profile': 'https://3dprinting.stackexchange.com/users/16629', 'pm_score': 1, 'selected': False, 'text': '<p>I had this problem also. After a few hours of troubleshooting and changing the extruder temp, printing speed, layer height, and infill density. I realized that I had set the PLA diameter at 2.85 mm when it was 1.75 mm. Changing that fixed all my problems.</p>\n'}]
['https://3dprinting.stackexchange.com/questions/4575', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/5579/']