<p>I'm new to 3D printing, but my printer supports Linear Advance. I heard that it offers improvements in print quality. I used <a href="https://marlinfw.org/tools/lin_advance/k-factor.html" rel="nofollow noreferrer">Marlin Linear Advance Pattern Generator</a> to generate a print with horizontal lines at a variety of k-values.</p>
<p>Which K-Value would be best from my below image?</p>
<p><a href="https://i.stack.imgur.com/i8UAF.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/i8UAF.jpg" alt="enter image description here" /></a></p>

[{'answer_id': 18862, 'author': '0scar', 'author_id': 5740, 'author_profile': 'https://3dprinting.stackexchange.com/users/5740', 'pm_score': 4, 'selected': True, 'text': '<p>As a general answer to evaluate the effectiveness of the K-factor, when the K-factor Calibration Pattern generator output print is inconclusive (probably not in this case), printing a tower at various K-factor values might give you more insight, e.g. like:</p>\n<p><a href="https://i.stack.imgur.com/G8AWx.png" rel="noreferrer"><img src="https://i.stack.imgur.com/G8AWx.png" alt="enter image description here" /></a></p>\n<p>To vary the K-factor with height, a similar procedure as in <a href="/a/7346/">How does one use a heat tower?</a> can be followed to insert a new K-factor with <a href="https://reprap.org/wiki/G-code#M900_Set_Linear_Advance_Scaling_Factors" rel="noreferrer">G-code <code>M900</code></a>.</p>\n'}, {'answer_id': 18866, 'author': 'R.. GitHub STOP HELPING ICE', 'author_id': 11157, 'author_profile': 'https://3dprinting.stackexchange.com/users/11157', 'pm_score': 2, 'selected': False, 'text': "<p>Go with the sort of tower 0scar suggested and look for corner bulge/rounding. It's a lot more useful than the single-layer test pattern from the Marlin site, which I've found can be misleading.</p>\n<p>With that said, just looking at your test print, I would go with the lowest K factor that gives acceptable-looking results, so around 0.5 or so. Overshooting is more likely to harm your print quality than undershooting, and will limit your print speed too. When I used the original bowden on my Ender 3, my calibrated K factor for PLA was 0.6, so I think this is in the range of what's expected.</p>\n"}]
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