Fix Bad 3D Prints on a Creality Printers

Chuck shows you how to fix bad 3D prints on Creality 3D printers such as Creality Ender 3, CR-10 and CR-10 Mini. There are many reasons a print may fail but if you have your settings are right and your nozzle isn't clogged what could it be?
He shows you an issue that is easy to fix and you probably didn't even know you had it on this week's Filament Friday.

Metal Extruder Top:

EZR Extruder:
or

Creality Ender 3/CR-10 Parts:
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Creality Ender 3:

Creality Ender 3 Pro:

CR-10:
CR-10S

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[korkutsert]

DUDE, you saved my prints. I was so frustrated with my CR10, which I bought used. I was getting ready to sell it. Now it prints fricking PERFECT. I will try to save few bucks so I can support you on Patreon! THANK YOU VERY MUCH!

[QuantumKatmusic]

man, creality owes you a lot of gratitude, ill tell you what. You've solved more problems and answered more questions about my ender 3 than any other content creator or website

[jhazel]

I got so frustrated with this problem over the last two months that I went from having two printers running 100% to turning one off and only periodically using the other.

Thank you for yet another great video!

[meisievannancy]

Take the spring out. Stretch the spring as it has relaxed over time. This increases it's spring modulus. Don't stretch too far. Just enough so that it relaxes at a longer length. Put it back. No need to put in spacers. It will run for a long time like this till it relaxes shorter again from the heat over time and constant compression.

[gageparker]

I just discovered this myself yesterday, and I made a similar fix to the one you highlighted. My prints look just as good as they did at the peak of my machine. Came to see if this was covered on any of my favorite 3d printing youtube channels, and here I am. You have helped me figure out so many minor issues on my printer, your channel is invaluable. Thank you for all you do.

[McRibz]

It's like you have a 6th sense on to what is going on with my machines.
You never fail to provide quality, helpful videos. Thank you!

[williamhargraves]

Just torn my ender 3 back to bare parts turns out it was the extruter tensioner bearing that was too tight causing under extrusion 🥵😱🤦🏽‍♂️ thank God for filament Friday. Mate you're a bloody legend

[CatCommando]

I suffered from those gaps and switched to a clone Bondtech BMG for completely other reasons, my prints have become basically flawless. I never suspected the extruder since it LOOKS like it works even when it sucks.

[richfriesen]

my prints were suddenly garbage, tried pretty much everything for about a 2 weeks. saw this video and once i took it apart i saw a very visible crack in the extruder arm..right under the idler wheel...this video saved my sanity

[sethogreenc]

I have had under extrusion issues for awile. After watching this video, and trying the suggestongs from CHEP, I never had the issues again. Thank You!

[unmintedltd]

Wanted to thank you for sharing this video - set up my 3rd Ender 3 Pro this last week. It was all dialed in - e-steps calibrated, aluminum extruder, no movement in the bed, bed leveled, belts tensioned, fresh nozzle, Capricorn tubing, z-axis aligned, but I kept getting odd blobs, occasionally dropped "chunks" of filament and weak infill. Following your advice and checking the extruder for issues, the spring appeared to be putting too much pressure against the filament, so I cut off the last coil of the spring to weaken it a bit, reinstalled, and it's printing beautifully now. Thank you for sharing your time and discoveries with the world.

[jonathanlarsen]

THANK. YOU. SO. MUCH.
you saved my drive to keep learning 3D printing. One month of constant issues (with some successes inbetween) and this seems to have fixed it.
110% scaling was a great tip too, simply amazing!

[coderfromscratch]

Man.... Saw your video, saw the loosening of the extruder screw.... Made me laugh. Decided to try anyway.... Perfect prints, just perfect prints.... Beautiful. Thank you so much

[joshuartaylor]

OMG, I LOVE YOU!!!! This solved ALL MY ISSUES! Literally have a brand new printer again!

[dinosoarskill]

Chuck, I just did these to my Ender and it just helped immensely with some print quality. I have been chasing this for a couple weeks now, thank you!

[scottbaeder]

WOW...I just went through figuring this out on my own over the last two days!!! Finally worked back to the extruder, and BINGO...Clogged up with dust and other gunk because arm was too tight! Wish you published this Wednesday!! Keep up the good work!

[Unicycleskill]

Just installed a BLtouch on my ender 3 pro thinking it would solve this issue but sure enough loosening that screw was all I needed. Thank you so much!

[iandawkins]

Quick tip for new viewers, I know you have covered it before  but upgrade the extruder to the aluminium type costs about $7 to $10 on eBay it's so much better. Use a little silicone grease when assembling and it will stop the parts binding up over time. Respect Sir another great video.

[mednone]

I had a very similar issue and the cause was that the grub screws of the pulley of the extruder had come loose. Just tightening those grub screws fixed it. I've read other people experienced the same issue, so it's quite a typical scenario.

[ArtificalSUN]

Wonderful video on extruder maintenance! However, there is so much more to it. One important thing worth checking in case of extrusion problems is actually how tight the gear sits on the motor shaft. It sometimes gets loose and every retract you have spoils your extrusion because of the gear's backlash. I also agree with suggestion on buying new metal extruder, since the stock plastic idler's quality is... unstable, as far as I know (I personally know 4 people who had their idlers cracked after first month of printing).