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3D Printing 101: How To Fix a Clogged Nozzle Using a Cold Pull!

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Clearing a jam in the nozzle can be an easy fix. Using nylon filament and a few minutes of your time, you can clear the debris within your nozzle that causes inconsistent extrusions and failed prints!
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Опубликовано:

20 авг 2024

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Комментарии : 414

@MakersMuse 6 лет назад

Love a good cold pull :P Also what can work amazing is to use intentionally moisture damaged nylon next to 'steam clean' the remaining crap out of the nozzle. Like seriously if you let it get wet it pops spits and builds up pressure in the nozzle. It's SO satisfying.

@3DPrintingNerd 6 лет назад

YES! I've only done that once, long ago, on accident. I need to do it again. Plus, it's super easy to do!

@tristanverbruggen1627 6 лет назад

Steam clean? My dad would freak out

@mattelder1971 6 лет назад

As I just posted, string trimmer line works well too, with the added benefit of it usually being quite full of moisture, so you get the steam cleaning effect as well.

@freeinhabitant2422 3 года назад

@@mattelder1971 Thats funny. I was just thinking about that while watching this wondering where I was going to get a nylon string like that. I have some "twisted" trimmer line as well. Maybe turning it around and back and forth in the nozzle will have an "agitation effect" or a "swiping effect" and clean even better :)

@richardabner9420 2 года назад

@@mattelder1971 What size line trimmer line would be appropriate for a 4mm printer nozzle?

@zumaleem6517 3 года назад

Just want to say I'm very new to 3D printing and had no idea what a cold pull is, this is by far the best tutorial I've seen. Subscribed to you! I love the energy and how well you explain things. Made it so easy to follow

@scottt6806 6 лет назад

Joel just feels so personal, like he cares about my happiness and stuff. Thanks Joel, I WILL get something tasty to drink. :)

@JoshKindhart 4 года назад

When I tweeted a number of 3d printing youtubers he was the first to respond back to me.

@3DPrintingNerd 4 года назад

And I replied here too!

@JoshKindhart 4 года назад

Some heroes don't wear capes :D

@DarkChasmGamers 3 года назад

Papa Joel, tell us a 3D printing bedtime story

@eastman12344 6 лет назад

I love these basic videos. It helps everyone. Please do more of these!

@WhereNerdyisCool 6 лет назад

One thing I would add...I would move the print head to the corner and be wary you are not pulling upwards too hard to damage the metal rods. I've never used Nylon for my Atomic Pulls, just PLA...heat to 220, press filament in, then cool to 90C and pull. Rinse and repeat as needed. I'll have to see how Nylon does as a comparison! :)

@4WDJUSTY 6 лет назад

In work we used PLA to cold pull a fully cloged UM3 BB hot end (with PVA) it takes few pulls and in the end it was like brand new.

@Theexplorographer 6 лет назад

Yes, this is the correct way... the way it is explained in the video is not the correct way.

@tonpa8888 6 лет назад

The Explorographer There is no 'correct' or 'wrong' way. Of course, it works with PLA, but if you have some Nylon, thats better. The type of material doesn't really affect the cold pull. It's the action that does the magic. The type of material just changes how well a material works to clean out another material, based temperatures

@Theexplorographer 6 лет назад

Well then we can just agree to disagree. I am going by how it is shown to be done right from the Ultimaker site. Do it however you want.

@tibo786 6 лет назад

What i dont get is why he heats up the filament before pulling it out. Why call it a cold pull when you heat it up? I Also always use pla and either let it cool down all the way or heat it to 80C because it gets really flexible but it will pull everything out even the little bit right inside the 0.3mm hole.

@aPyroDesign 6 лет назад

I remember the first time I learned this trick. I was extremely excited. Made my printing life so much better. You are still one of like 10 people that have one of my custom faceplate haha.

@crussty3d 6 лет назад

Quick note to add: if you have a hot end where the PTFE tube goes ALL the way down to the nozzle (such as a CR-10), even if your firmware allows you to go to ludicrous temps, you should throttle it around 235c.

@Kek5kopF 5 лет назад

Meh, I'm printing PETG at 260°C with this and the bowden tube looks fine...

@logmegadeth72 4 года назад

Eh. Even the UM2+ has a PTFE coupler between the hot end and the Bowden tube that needs to be replaced once in awhile from heat exposure (after1000hrs print time usually). Needs to be replaced more often with higher temps. Not like a cold pull takes that long anyway.

@qnner 9 месяцев назад

I took an old Bowden tube and cut an 2inch piece to guide my filament when loading hotend. Then after hotend cooled, I removed the tube, reheated hotend and did a cold pull. That way I didn't need to worry about guiding filament or burning my Bowden tube.😅

@AlbertoAlexanderRodriguez 3 года назад

Joel, I love you. I've been having trouble lately and the last print was plain awful. So, I bought 1 roll of nylon filament (I though "what the heck, let's give it a try") and after about 10 pulls, it is now printing as good as new. Thank you so much for this.

@welbot 6 лет назад

I don't even have a filament printer, yet this was very interesting to me! Surprisingly, I still get asked a lot of questions about filament stuff, so always appreciate having more knowledge on hand to share when I can! :)

@jorgeespinoza3938 6 лет назад

welbot wouldn't it be nice to have a 3d printer with an "autoclean" feature? Hope manufacturers take notice.

@nipunagunarathne4882 5 лет назад

@@jorgeespinoza3938 actually it looks like it would be pretty easy to write a piece of gcode for it. would work especially well with direct extruders. I wouldn't be surprised if such a gcode already exists

@hurbowl 6 лет назад

Thank You! I've been sitting with a clogged extruder forever. I looked up how to do an "atomic pull" and was thoroughly unimpressed with the results. You're technique seems much better, and I'll give it a try so I can get back to printing toys for my kids.

@jockspice 6 лет назад

I have done cold pulls on my Ultimaker Original and UM2+ for a long time but using nylon adds an extra dimension that I didn't think of before, so gave it a whirl. Couple that with the constant pressure while cooling, it works really, really well! Nice one, Joel; adding a new twist to an essential technique! #highfive

@mattelder1971 6 лет назад

A little hint, if (like me) you don't normally print in nylon, and therefore don't have nylon filament around to do this, look for a small pack of string trimmer line at a home improvement store or the garden section of Walmart. You can usually find a small roll of it for just a couple of dollars. Be sure to get ROUND line (it does come in other shapes), and make sure the size is one that will fit your extruder (.065 inch line works well since it works out to 1.65mm, just under the normal 1.75mm size of filament).

@klayer91 Год назад

good to know

@darknimbus_ 3 месяца назад

Thank you so much! This was the best explanation ive found for a cold pull and finally got my printer unclogged. Gonna be more careful using filament with glitter in it from now on....

@qnner 9 месяцев назад

Just got 7 year old printer for pennies. This video cleared biggest problem i had whit it (after rewiring controlbox😅). Thank you for your 5+ years old video!🎉

@3DPrintingNerd 9 месяцев назад

That’s great news! You’re welcome:)

@cherryweyland1679 6 лет назад

Joel you're a legend. I have literally been suffering this issue for the past week and this just diagnosed and fixed it. Thank you so much!

@TheVirtualTim 4 года назад

Thank you! I'm new to 3D printing. On forums I occasionally read the suggestion that someone should do a "cold pull" on the printer and the rest of the folks on the forum all nod like we all know that means. NOW, thanks to you ... I know what that means! Thanks Joel!

@TraitorFelon.14.3 4 года назад

Amazingly some searches on the internet for “cold pull 3d printer” gives you loads of results. No need to wait for a spontanious RU-vid algorytm to present you with the answer.

@KruellNationGaming 2 года назад

Great video mate. Put it on my watch later playlist so I can always come back to it for refresher.

@MrAndymanD 5 лет назад

I occasionally find myself frustrated by random clogs in my Prusa i3 MK3 and after being benched for a month -- and fearing that a complete teardown and PTFE-tube replacement was in my future -- I thought that a cold pull might help, so I watched this video. I turned up the extruder temp to the max (295C, IIRC) and when I inserted my regular PLA filament, noticed that molten filament was flowing, so clog problem solved! :) While I may do a cold pull down the road, it just didn't dawn on me to really crank up the temp to unclog the printer! Thank you, Joel, for making such clear (and helpful) videos for newbies like me!

@MrAndymanD 5 лет назад

Oh, I was going to say that you listed the steps in your video and I'd find it even more helpful if you listed those in the description (or had a link to a page containing same), so we short-term-memory-challenged folks can use it as a checklist during the process. Thank you!

@Trevor_Green 3 года назад

Bacon jalapeño jam? You've changed my life and now I'm on a mission to find such a thing

@lazysouldog805 5 лет назад

Thanks for all of the great info Joel. This helps me out a ton. I'm a noob at this & would never have thought this was an issue until I actually started developing problems. I'm pretty sure you just saved me a bunch of failed prints.

@RussDahlberg 3 года назад

I’ve read the term cold pull so many times but honestly was afraid of asking and looking dumb. Thanks for the video!

@3DPrintingNerd 3 года назад

Thanks for watching!

@antonypalmer2815 3 года назад

I had not seen this method using nylon, good idea . Thanks

@MadeNewOmaha 6 лет назад

Probably the best cold pull video ever. Also, looking for a followup video on this where we get to see the Full Joel Cold Pull. Lastly, those subtle little inserts from Sean might be the highlight of videos like this :D

@Aidenn23 6 лет назад

Thank you! I try to spice things up here and there, but I'll never be as spicy as bacon jalapeno jam. :)

@Snowcrash777 Год назад

Thank you for sharing and helping me learn in my 3d printing endeavors.

@CorvusNumber6 6 лет назад

Excellent video - thank you! My first printer (Ender 3) has just arrived 20 minutes ago too! Happy days...

@jameslaine2472 6 лет назад

Nice! Watch out for wear on the filament intake; that 90 degree bend is harsh! I suggest your fist print be a filament guide. www.thingiverse.com/search?q=ender+3+filament+guide This one looks quit nice, and uses bearings for a smoother filament path: www.thingiverse.com/thing:303550

@CorvusNumber6 6 лет назад

James Laine Excellent! Thanks for the tip and the links - very much appreciated! 👍🏻😎

@bondbros01 3 года назад

thank you so much, i had to try this while my printer had paused a print and it worked :D didnt want to wait another 2 hours to print something that was almost done.

@brian.hanifin 6 лет назад

Thank you so much. I have never understood how to do this. A visual guide made this misunderstood method easier to understand.

@StephenZura 6 лет назад

I remember my first jammed nozzle, back when I couldn't find replacements. I was printing with ABS and was getting all kind of tension and build up in my hotend. I took the nozzle off and let it sit in acetone overnight to unclog it! 😆

@KieranShort 6 лет назад

Stephen Zura now that is an idea I like! Screw putting force on your z-axis... Just soak it!

@randycox4633 6 лет назад

I've done this before and just end up with a bunch of gooey abs still choked in the nozzle. Had to keep agitating and rinsing it out with acetone several times. Maybe that plug was extra bad, but it seems like a cold pull could do just as well and maybe a little faster.

@jameslaine2472 6 лет назад

Unfortunately, Acetone wont clear out PLA, etc., only ABS

@CyberCrist 4 года назад

Thank you for this! I've read plenty of pages on how to do a cold pull, but seeing it is always helpful.

@SuperMattMan03 Год назад

A cold beverage sounds nice…I think I will indulge while engaging in this practice. Thank you! Still learning everything with 3D printing

@Hilmi12 6 лет назад

I have had super success with esun cleaning filament. Rescued a nozzle after multiple cold pulls have failed. I was about to throw away the nozzle. Came out loke new. Ran around 10 cm of cleaning filament through the nozzle then did a cold pull using the same cleaning filament. The cleaning filament cold pull is at room temperature. Amazing stuff

@ThatHippyDuck 2 года назад

12 minutes. awesome. helps with my stress right now.

@ehllyINTHEYEAR8642 6 лет назад

Having a clogged nozzle was the worst experience ive had starting out. It took me FOREVER to get it right, although once i realize cleaning the nozzle is very important everything came together and my life changed for the better lol i no longer get frustrated and give up on my 3d printer. it still is a process to have it clean, the cold pull method is something id have to try for myself! #3DPrinting101

@GdalyaRoth 6 лет назад

Rock, paper, scissors...lizard Spock! I've had the same shirt for years and never seen it on anyone else. Please consider leaving a link when you wear a cool shirt, which seems to be more often than not.

@Scotty-G 6 лет назад

Nice video Joel. Good idea for alternative methods ... I use cleaning filament (eSun) which has a little gritty feel and seems to help scrub the insides as it moves through the nozzle. I then set temp to 100°C and let sit for a few minutes just before slow pulling.

@toddshaffer6606 6 лет назад

As a newbie to 3D printing, I found this extremely helpful (and entertaining!).

@builderbb8767 6 лет назад

Wow Joel this was super Helpful, for someone who has just gotten started I'd appreciate more of this format

@csamulski 6 лет назад

Great instructions Joel! I had bought some "cleaning filament" for my M3D Micro as it clogged ALL THE TIME. But never really knew the right way to use it. What you showed makes a ton of sense.

@josephKEOarthur 2 года назад

I love the homemade look of the ultimaker.. looks like some one in jr. high school made it.

@jensen2856 6 лет назад

Thank you! Perfect timing! My Qidi X-One printer just clogged last night and I was having a lot of trouble finding out how to unclog it without taking it apart.

@dfroelicher 4 года назад

I am in no way a printing veteran. However, I feel I have come past amateur status lol. That being said, I feel if you think you know everything about a topic you should stop doing it. I think these videos are great and need to stay relevant and updated to current popular models so that people searching for them can use them step by step. As long as there are new users 101 type videos will always be needed. Keep up the good work Joel and 🤚

@costaschristodoulou1641 6 лет назад

Hi Joel I will be getting my first 3d printer in December and I feel that your channel is preparing me for the frustration and solutions

@jackwood6214 Год назад

I subbed when I saw you're in WA. I'm in Kent lol. Thank you for this video. I think I have this exact problem. Not a full jam but partial blockage.

@Zack-gs2xt 3 года назад

your the only person how helped me clean my nozzle thank yo soooooooooooooooooo much man!!!!!!!!!!!!!!!!!!!!!!!!!!!!

@thunderrobots1980s 9 месяцев назад

thanks a lot your video helped me solve my jam , and i even found out(thanks to you showing me the cold pull) that my printer came with a tool to use on the jams

@3DPrintingNerd 9 месяцев назад

Glad I could help

@jagardina 6 лет назад

Am new to 3D printing so yes, I appreciate this. I'll order some nylon.

@PandaPeej 6 лет назад

Love the video Joel! Quick side note to Sean, when Joel was talking about jam, I was sad that there was no SpaceBalls reference. "Jammed, Raspberry!"

@marko5766 6 лет назад

Perfect timing, having some issues with my Prusa I3 Mk3 and came to RU-vid to research this very thing!

@Lidocain777 2 года назад

Nice tip ! I don't do it exactly the same ... My method differs in only 1 point : I don't re-heat once it's at the desired temp. With nylon, I let it reach 120°C or so and then pull the whole stuff. Works like a charm. also works with PLA, going down to 90°C.

@anova_inc 3 года назад

This was not remedial for me! This was so helpful! Thanks, 3d Printing Nerd!

@morrielewin1554 3 года назад

Just had my 4 week old Ender 3 V2 clog up after about 100 hours of printing (last 3 projects were over 20 hours each). It clogged just about 3 layers short of completing the last model (sigh). Between the Creality video and this one, I should be able to get running in no time. Thanks!

@TootEmCarMan 4 года назад

Decided to do a cold pull after having seen this video. I am currently waiting for the hot end to cool down and am enjoying my cold beverage! :)

@laharl2k 6 лет назад

I preffer doing it outside with a heatgun. With it clogs i just jam in a new nozzle and then clean it later. I also give it a few brushes with the steel wire brush till its all clean too

@cosmickatamari 5 лет назад

I like when your videos show up as a google result!

@3DPrintingNerd 5 лет назад

I do as well!

@jmtx. 6 лет назад

Thanks for an excellent step by step detailing of the process. Guess it's something we should be doing periodically anyways.

@tz_machine527 6 лет назад

Thanks Joel for the tip, I hab also this special problem, but I such for a really good step by step tutorial, good job👍🏻😊

@TonytheAnt94 3 года назад

I watch this video every time I do a cold pull lol :D

@jamesdunn8063 5 лет назад

It's good to have videos like this how about a video on maintenance for 3d printers good example would be what kind oil is best on guide rails.

@roadrunner001 4 года назад

For those like myself who are just starting out this stuff is gold.

@jesse-dg8yx 6 лет назад

Mine was once clogged as in no filament would come out at all because it somehow wasn't melting the old filament further away from the heating block so I took a lighter and heated all around it until about 300-350°c and that was enough to melt all of it and I could then push it out. A bit extreme but if this video doesn't work that might be your next only solution.

@macelius 5 лет назад

I cold-pull (usually using PETG cause it likes to stick to things better than nylon and it's all clear and easy to see the gunk on) all the way through the bowden and extruder, no need to dis-assemble.

@andrewehlers6659 6 лет назад

Joel. Love the videos also love the Rock, Paper, Scissor, Lizard, Spock shirt.

@rachellejanssen2655 4 года назад

we had a jam a couple of weeks ago on our ultimaker 2+ printer at the office. It took us a total of 3 hours to figure out what was wrong where. In the end it was a huge blob of plastic that didn't want to melt at all. It nearly destroyed the whole extruder. We also lost the spring that was in the filament drive, so jammed an allen wrench in to keep the button pressed.... Luckily it has been printing quite ok since then, but I still prefer my personal flashforge finder (350 euro) over an ultimaker that is literally 10 times the cost

@Old_Man_Bushcraft 6 лет назад

Great info, especially for people newer to printing.

@MrHeHim 5 лет назад

Good to know that works lol, I've been doing that with PLA for a long time and has worked flawlessly ;-) I have a different method but same principles, while it cooling I just keep jamming it back in and out cutting off the tip each time until it won't melt anymore.

@andrewjamez 6 лет назад

Great tip!! Always good to learn new techniques to clean blockages and even some good ol preventative maintenance 😀

@andyperlikii4750 4 года назад

Is there a way to search topics of your videos. I think they are great and I often need to research a particular topic. As an example, I want to know the ins and outs of printing with Nylon. Thanks

@gbusrt6592 6 лет назад

great content actually showing what happen when you have a 3d printer and how to fix it,

@andreasp.7246 6 лет назад

I usually do this with PC instead of Nylon. Works for me

@funcraft3605 6 лет назад

You release this video right when I spent a day unclogging my nozzle... **-**

@chuysaucedo7119 4 года назад

Thanks for sharing this. I need to do this. I suspected partial clog, based on the last print. Now I know how to clean it out. Thank you

@m3dps674 6 лет назад

I've always wanted to know what a cold pull was! Thanks joel!

@lgflanang 5 лет назад

KISS!!! With the price of nozzles, just replace it and avoid all the aggravation.

@Thomllama 6 лет назад

sweet info, been doing this for years. One thing, actually I've found things like Nylon aren't the best. Reason, they release at higher temps, so lets say the PLA you are trying to clean out is actually liquid already before the nylon releases. Honestly I've found Flexables (TPU TPEE) work the best as you can let it get near room temp to do the pull. Everything is somewhat solid and when you pull it you'll hear a satisfying POP and everything in the nozzle gets yanked out.... nothing gets left behind.

@smithincanton 6 лет назад

"A sweet Intel Bunny Suit" THERE is a name I haven't heard in a loong while!

@MichealWeinfurtner 6 лет назад

Joel, thanks. Something I had not learned yet.

@marknchristy 6 лет назад

Thanks, Joel! I have yet to get my first printer, but this is the first time I've encountered this idea. Yay for learning! #HighFive!

@susanboyd6592 2 года назад

Fresh out of the box. Not sure why it would be clogged but here we are.

@troypetryk2043 6 лет назад

I just use cleaner filament and it works like a dream

@FesterWerks 5 лет назад

Wasn't remedial for me. Defined the problem well and presented the solution. Was perfect for me as I'd heard of the technique but didn't know how to do it. Off I go to give it a go.

@thokk10289 6 лет назад

Thanks for the how to Joel. This is the kind of stuff i love even though i knew how to do this already.

@elfpimp1 6 лет назад

I do almost same with nylon except I will quick pull at 90c. Comes out great and the end looks like the inside of the nozzle.. :0) Good Vid 3DPN! #HighFive!

@werner1 6 лет назад

Great Tutorial! clear instructions won't forget the steps. I'm going to grab a warm beverage it's winter on my side 16-18c - 62f winter wear is socks with your sandals lol.

@ASkewedView3D 6 лет назад

Loved the Sesame Street moment "cold pull" , another good video thanks for sharing. Have a great day. God bless

@kryptonicloser 6 лет назад

I got myself in a good habit that in between every filament change I do a cold pull. And I even keep that little bit of filament that’s left on a spool just for an occasional cold pull as well if I feel the need.