<p>I have this clogging problem on my 3D printer that I am having a really hard time to solve. I am a hobbiest so in no way am I a professional with regards to 3D printers. I also know that this is a popular issue and I have tried a lot of the proposed solutions (going through a lot of PLA filament and failed prints) to no avail. I will try to describe the problem and what I have tried to solve it.</p>

<p>First the issue:<a href="https://i.stack.imgur.com/OremM.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/OremM.jpg" alt="Removed hortend to show the clog"></a></p>

<p>This shows how the filament clogs. The next image shows the assembled printer head for reference.: <a href="https://i.stack.imgur.com/AhioD.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/AhioD.jpg" alt="Assembled printer head"></a></p>

<p>This is how the print looks when it fails:<a href="https://i.stack.imgur.com/ZcvdG.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/ZcvdG.jpg" alt="Failed print"></a></p>

<p>I have tried the following:
- Adjusting the temperate between 190 up to 220 for the PLA filament. Everything trying a print with it.
- Doing a thorough cleaning of the nozzle (Acetone soak, wire brush, guitar string etc.)
- Checking the Teflon pipe inside the tube if it is clear and ensuring that the edges allow the filament to pass through.
- Check if the cooling fans work well to ensure cooling of the whole assembly (they work, they aren't jammed etc.)
- Dissambling the printer head and putting it back together.</p>

<p>I have printed with the printer before without a problem. I printed PETG a few times to get that working and the results were decent. When I returned to PLA this issue started and no matter what I change on the profile it won't work. I have tried adjusting feedrate, flow rate, retraction amount and speed, temperature, fan speeds to name but a few things.</p>

<p>I have a Cura profile I can upload if that will help. Any advise would be much appreciated. I have been struggling with this for a while now and really need some options.</p>

[{'answer_id': 5698, 'author': '0scar', 'author_id': 5740, 'author_profile': 'https://3dprinting.stackexchange.com/users/5740', 'pm_score': 1, 'selected': False, 'text': '<p>You do not necessarily need a specific design tool, you can use any tool you want to create your multiple material product. It is the slicer software that manages the materials by assigning the correct extruder. E.g. Cura is able to join 2 STL files that fit together and assign each part a specific extruder and thus material. Please read more <a href="https://ultimaker.com/en/blog/34012-get-started-with-cura-printing-with-two-colors" rel="nofollow noreferrer">here for instructions</a></p>\n'}, {'answer_id': 11840, 'author': 'cmm', 'author_id': 2082, 'author_profile': 'https://3dprinting.stackexchange.com/users/2082', 'pm_score': 2, 'selected': False, 'text': '<h2>A Scriptable Process for Generating Multi-Material STL Files:</h2>\n\n<p>I am now using interactive CAD software to define the more complex features of the object I am printing (in the current case, clock faces), and then using OpenSCAD to do the boolean volume operations.  </p>\n\n<p>To print the composite object, I need three STL files, one for each material I am using.  The three parts are the clock body, the translucent optics to conduct the LED lights, and the clock numbers.  </p>\n\n<p>I need:</p>\n\n<ul>\n<li>one STL for the body minus the LED optics and minus the numbers.</li>\n<li>one STL for the numbers minus the LED optics, and</li>\n<li>one STL for the LED optics.</li>\n</ul>\n\n<p>The CAD package supports the operations, but every time I change anything, I have to jump through several hoops to combine the three parts, manually and recreate the three objects.  </p>\n\n<p>I had used OpenSCAD to make the optics and the numbers, and they were never in the same coordinate system as the clock body from the interactive CAD package.</p>\n\n<p>So, I scripted it and used OpenSCAD to read the clock body STL and being it into OpenScad.  I transformed it into the common coordinate system.  I then did, one by one, based on a command-line parameter, the boolean operations, rendered the result, and exported the resulting STL file.</p>\n\n<p>When I read the three files into PrusaSlicer, the lined up perfectly and everything worked simply, without and precision hand-eye coordination, and with no drama.</p>\n\n<p>Scripts and command lines work for repeatability far better than squint, drag, and guess.</p>\n'}]
['https://3dprinting.stackexchange.com/questions/5706', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/10333/']