<p>I'm seeing the following pattern on my Prusa clone:</p>

<p><a href="https://i.stack.imgur.com/uskfa.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/uskfa.jpg" alt="Photo of low quality second layer print"></a></p>

<p>The first layer prints OK, layer adhesion to the bed is good. The second layer shows the weird gaps. On larger pieces, or with an increased feed rate, it sometimes gets so bad that parts of the second layer detach and are dragged across the print. I get the impression that this effect is worse when printing in the "top left to bottom right" direction, but not as bad when printing in the "top right to bottom left" direction. </p>

<p>This occurs with multiple filaments and materials. I've already tried to manipulate the flow rate, temperatures and print speed, but gotten little improvement if any. </p>

<p>What might be causing this issue?</p>

[{'answer_id': 3235, 'author': 'Tom van der Zanden', 'author_id': 26, 'author_profile': 'https://3dprinting.stackexchange.com/users/26', 'pm_score': 3, 'selected': True, 'text': '<p>I wouldn\'t describe that as an "OK" first layer. The nozzle is either too far from the bed, or you\'re underextruding. Underextrusion also looks like the cause of your second layer problems.</p>\n'}, {'answer_id': 3242, 'author': 'StarWind0', 'author_id': 2146, 'author_profile': 'https://3dprinting.stackexchange.com/users/2146', 'pm_score': 1, 'selected': False, 'text': "<p>Your first layer is horribly misscalibrated as well. </p>\n\n<p>You really should do all calibrations over. Including your firmware when your result is this bad. </p>\n\n<p>Following. Let's just assume your firmware is set right. And that your flow is right as well. The second layer speaks loudly of overcooked dribbling plastic. You might have a jam. Maybe the factory left some metal shavings in the hot end. I've had it happen. Try taking apart the extruded. Make sure there are no obstructions. Clean the tip with a micro hand drill bit. </p>\n\n<p>After that we will need more info. Post your settings. Your might have underflow (you set filiment size higher than it is) and have temperature so hot your are literally boiling the plastic and it is all dripping sparatically instead of controlled. </p>\n\n<p>Having temp too high can increase carbonization build ups and creats Jams. Did you ever have a good print ? My money is on a partial obstruction. </p>\n"}]
['https://3dprinting.stackexchange.com/questions/3089', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/4620/']