<p>For some reason, my larger prints, or rather the ones that I create, have this &quot;dotted&quot; line in them. And, that line usually splits into two pieces.</p>
<p>I use Ultimaker Cura for a slicer, I use Blender for modeling, and I have an Ender 3 Pro</p>
<p>Let me know if anyone knows the reason for this as it's preventing me from making things on my own.</p>
<p>Picture:</p>
<p><a href="https://i.stack.imgur.com/ZUi8y.jpg" rel="nofollow noreferrer" title="Photo of print with dotted line"><img src="https://i.stack.imgur.com/ZUi8y.jpg" alt="Photo of print with dotted line" title="Photo of print with dotted line" /></a></p>
<p>Here's my <a href="https://cdn.discordapp.com/attachments/610969665744666664/901290253678178364/box.3mf" rel="nofollow noreferrer">Cura file</a>, if anyone needs it</p>

At first glance, this looks like it could be missing layers.
There are five possible causes for missing layers.
Something is off mechanically.
Check to see if anything has slipped, shifted, moved, or popped out.
Misalignment
Check to see that all three axes are properly aligned and haven't shifted. If there is any resistance, something is misaligned, bent, or a problem with the bearings.
Bad Bearings
If a bearing is the culprit, it will make some noise. The bearing will also exhibit some uneven motion in the print head.
Lack of Lubrication
Check to see if any of the axes are binding in any way. A little, and just a little, bit of sewing machine oil can be the solution.
Under-Extrusion
This is a whole different set of problems that requires a new question to get an answer.
For more detailed information, see All3DP.com's article "
3D Printing Troubleshooting All Common Problems
"