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How to Identify and Fix Common Problems ?

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Nozzle height: If your 3D printer nozzle is set too close to the print bed, it can result in clogging. This is because the nozzle will not be able to properly deposit the first layer of melted filament onto the print bed. Instead, the melted thermoplastic will coat the outside of the nozzle and adhere to it.
The reason behind this problem is that some of the old material remains in the extruder due to the lower temperature needs of the new material. As a result, the old filament will not melt completely, and the residue left behind may cause the nozzle to clog in the long run.
Nozzle clogging is the build-up of solid or semi-solid material on a refractory surface which can become problematic during steel pouring, as it can affect the stream dynamics, reduce the pouring rate, and cause large agglomerated particles to be intermittently released into the liquid steel stream in severe cases.
Manually push the material out of the nozzle, once it has fully heated up. The material should slowly protrude out of the nozzle. If it doesn`t, this means your nozzle is clogged.
The nozzle will have a poor spray pattern, increased pressure, and reduced flow. Accidental Mechanical Damage. This is the most widespread problem causing poor spray nozzle performance leading to nozzle replacement. It leads to poor spray patterns, increased pressure, and reduced flow. Nozzle Orifice Clogging.
This can happen if foreign debris is trapped inside the nozzle, when hot plastic sits inside the extruder too long, or if the thermal cooling for the extruder is not sufficient and the filament begins to soften outside of the desired melt zone.
Heat up the nozzle to 250°C and push the filament through the nozzle until you don`t see any of the previous filament coming out of the hotend. Cool down your extruder to room temperature to solidify the filament in the nozzle. Set the hotend to 115°C. At 90°C, pull on the filament until it yanks out of the nozzle.
Cleaning. Use a bit of filament to push a small piece of sponge or paper through the Bowden tube to push the small particles out. Make sure that the particles from the tube do not fall into the printer. Repeat until the Bowden tube is clean.
A clogged nozzle won`t let the filament flow through, and the resulting buildup of pressure can affect the extruder. The easiest way to fix this is to simply clean the nozzle using the appropriate needle, one of which comes with the Ender 3. It should clear the orifice enough to let filament flow evenly.
If your PC or the LCD screen on your printer is telling you that your ink cartridges are full but no ink is passing through to the paper, then it`s most likely that you are dealing with a clogged printhead. Blurry documents and images that appear faded are also signs that it`s time to remove the excess ink.
When Should You Replace/Change Your Nozzle? Although there is no set time frame for changing or replacing your nozzle, we recommend that you do so every 3-6 months. Replacement time is very dependent on how frequently you use your 3D printer, the type of filaments you use, and the quality of your nozzle.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Print nozzle is clogged
ANSWER : The print heads are not removable. The head cleaning function uses wet ink to clean dry ink, so not surprised that doesn’t work. You can try a head cleaning kit. It comes with a bottle of cleaning fluid and a syringe to inject it down into the print heads. Do a search on eBay for Epson head cleaning kit.

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Clogged nozzles in yellow only
ANSWER : Correction: Slightly offsets to the RIGHT.

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cleaning nozzles
ANSWER : Inject cleaning solution down into the heads. You can search Epson head cleaning kit on Ebay

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Printer Nozzle
ANSWER : Search ebay for Epson head cleaning kit.

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One small segment (nozzle check) missing/clogged – cleaning?
ANSWER : You need to buy a “head cleaning kit”. What that does is inject cleaning fluid through the ink port on top down through the heads using a syringe. They don’t cost much. Do a search on eBay for “Epson head cleaning kit” There’s lots of them. Another idea stolen from this site. Gotta love the internet.

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error in priming tubes proced
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Nozzles do not clean.
ANSWER : The head cleaning uses wet ink to clean dry ink. Really bad idea. Go on eBay and search for Epson head cleaning kit. They work a lot better and don’t use ink.

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Pixma iP3000, Clogged Cyan print head?
ANSWER : I have had similar problem with an IP3600, but only since upgrading OS from WindowsXP to Windows7 a few weeks back, and only with the PG fat Black ink.

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