RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
Hi, I’m dealing with exactly the same problem. The new nozzles got clogged right after an hour of printing. The official statement from chat support was to print the nexttruder parts again? How are they different?
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
I reprinted all PCCF parts included in the Nextruder Upgrade except for the fan shroud, using possibly the same type of Prusament using the Quality 0.15 profile on my MK4 (which is also inside an Original Enclosure). The original printed parts had some quality differences and some triangle marks, but I couldn't sport big differences if I'm honest.
Changing the pressure using the sprung screws did absolutely nothing for me. Before the clogging, I felt like the Nextruder had less "push power," so printing the parts was a hail-mary for me after trying everything I could come across.
It is now working, and that perceived poor friction on my tools has disappeared. The print quality was different and
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
Hi, I’m dealing with exactly the same problem. The new nozzles got clogged right after an hour of printing. The official statement from chat support was to print the nexttruder parts again? How are they different?
It doesn't take much of a change or warping of a part to cause issues. I reprinted my parts in ASA. The problem with mine was that the two parts that make up the leveler and the two parts that made up the leveler lock were slightly warped . Another issue was that the nut and bolt that held the locking device in place needed to be tightened periodically to pull the two halves together. If I didn't tighten them every few hundred hours or so I would get underextrusion or no extrusion. Look at the pic below I circled the issue parts with the nut and bolt. If these parts are loose or warped there will not be enough pressure applied to the leveler arms.
RE:
I'll just add that I have printed in an enclosure since day 1. I have around 1000 hours on mine and have not had a single clog. That's printing approximately 90% PETG, 5% TPU, 3% PLA and 2% ASA.
Based on this I don't think the problem inherant to the XL or some defect in it. The problem is something specific to these individual machines. For the nozzle to clog where you can't clear it I have to think there is insufficient heat break cooling allowing the heat break portion of the nozzle to get hot enough to melt plastic. Are you sure your heatbreak fans are working properly.
Also what kind of temps are you reaching in your enclosure?
Another thing to check is what filament profile are you using. Excessive retraction can lead to clogs as well
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
I'll just add that I have printed in an enclosure since day 1. I have around 1000 hours on mine and have not had a single clog. That's printing approximately 90% PETG, 5% TPU, 3% PLA and 2% ASA.
Based on this I don't think the problem inherant to the XL or some defect in it. The problem is something specific to these individual machines. For the nozzle to clog where you can't clear it I have to think there is insufficient heat break cooling allowing the heat break portion of the nozzle to get hot enough to melt plastic. Are you sure your heatbreak fans are working properly.
Also what kind of temps are you reaching in your enclosure?
I can not agree with you more, and I have no doubt the XL printer can print for several thousand hours without a glitch. In my case, I only use factory profiles on printer/intent/filament, and I only change the seam position and, maybe, the perimeters if I happen to need a thicker wall print. If a printer or almost any device I use fails to provide the right experience right out of the box, that product is seriously flawed unless, of course, you buy something specifically designed to be customized to experiment with it. A great experience is the value I see in Prusa, Formlabs, and Ultimaker, the three printer brands I use. I also mentioned the quality of the filaments because I wanted them not to be taken into consideration during the troubleshooting process.
I never thought the problem was the enclosure itself but the nextruder upgrade. The XL's enclosed area is gigantic, and the fan exhausts warm air out of the enclosure, improving temperature control with a little bit of air circulation. This provides a pretty good environment to print whatever your printer can, including PLA, with everything closed. I may be wrong, of course, but I find it very difficult to believe that a max internal temperature of around 31 C when printing PLA could wreak havoc with the nozzles.
Below the average temperature, as shown by the internal sensors and the LCD on the cover, shows around +3C:
I really don't think the problem is or was because of the enclosure. As of today, my little XL keeps printing brilliantly as it did before the upgrade, but I agree that it could have been the luck of the draw and not a product issue. However, I would expect the creators of such a magnificent piece of engineering to be more thoughtful and to ask for a way to get those failed printed parts from us to find out what went wrong with them and how this could have been avoided in the future but instead, their approach was to blame the user and call it a day. I saved the parts in case they wanted to do some forensics, but I just discarded them.
Anyway, for those occasional readers, the Prusa XL with or without the enclosure is a FANTASTIC printer. Support-wise, there's some room for improvement if an issue deviates from the ordinary.
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
I agree that at those temperatures it's not a problem. I regularly print with the chamber temperature between 35 and 40°C and around 45 when printing ASA.
I'm glad it's working well now.
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
Don't look at the enclosure temp. You need to look at the temp of the heatbreak. My temp rises to 50°C when printing with all 5 extruders PLA or multimaterial with higher headbed temp. But I agree, the main reason should be the upgraded parts. I also had problems with the new fan shrouds. The sizes were not correct and when I fully calibrated the printer they all failed the fan test. I had to install them all with spacers to pass the self-test.
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
Hello MME , I see in your picture a sleeve above the entrance of the extruder. For what is it good?
Thanks and best regards!
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
Hello MME , I see in your picture a sleeve above the entrance of the extruder. For what is it good?
Thanks and best regards!
That is a antikink coil. It keeps the filament tubing from stressing and kicking where the tubing enters the nextruder.
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
That's a good idea. Is that design on Printables?
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
I’ve remixed a plate upgrade, and added a bigger “funnel” to the filament entrance, and so far haven’t had any issues inserting filament, while it was a pain before.
https://www.printables.com/model/977122-xl-nextruder-main-plate-better-filament-guide
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
That's a good idea. Is that design on Printables?
No sir it is not.
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
That's a good idea. Is that design on Printables?
No sir it is not.
Looks simple enough, are you ok with me mimicking your design. I run thinner 3mm id tubing to help reduce friction, which is more suspectable to kinking.
I'll model something up and print from tpu.
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
That's a good idea. Is that design on Printables?
No sir it is not.
Looks simple enough, are you ok with me mimicking your design. I run thinner 3mm id tubing to help reduce friction, which is more suspectable to kinking.
I'll model something up and print from tpu.
No problem I used ASA to print mine. Send me your email and I can send you the stl
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
@mme That coil looks useful, why not publish it at Printables?
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
@mme That coil looks useful, why not publish it at Printables?
I have just been so busy I haven't had a chance to upload any of my projects! One day I hope I will be able too.
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
I'll just add that I have printed in an enclosure since day 1. I have around 1000 hours on mine and have not had a single clog. That's printing approximately 90% PETG, 5% TPU, 3% PLA and 2% ASA.
Based on this I don't think the problem inherant to the XL or some defect in it. The problem is something specific to these individual machines. For the nozzle to clog where you can't clear it I have to think there is insufficient heat break cooling allowing the heat break portion of the nozzle to get hot enough to melt plastic. Are you sure your heatbreak fans are working properly.
Also what kind of temps are you reaching in your enclosure?
Another thing to check is what filament profile are you using. Excessive retraction can lead to clogs as well
I have almost 3500 hours on mine now. Most of mine are from very long prints 12 to 30 hours each. 95 percent in the enclosure I printed early on. It was printed in PLA and still looks like new. I have been very happy with my XL. There are a few things I would change but really haven't had the time.
RE:
I had a similar situation with PETG recycled (prusament). It would clog over and over and over.
After testing lots of solutions with support, and becoming literally a black belt in cold pulling, it turned out that the filament profile required +5 degrees in temperature.
Assuming that filament profiles for prusament are correct was my mistake. The problem is long gone.
RE: My XL is now called Sir Clog-a-lot after upgrades. Any ideas?
Fighting constant clogs with my 2 head XL as well. There seems to be no rhyme or reason when it happens, it will just clog out of the blue. Getting really tired of replacing nozzles and/or hot ends. I print 100% PETG. Most of it is Prusament and the only other filament I use is 3DExtech ESD PETG. I've had both blog numerous times so I can't blame it on the carbon infused ESD filament. I have one right here now with orange Prusament PETG clogged completely up. Nothing I've been able to do can get one working again. I guess I'll try to add 5 degs to the nozzle temp as stated above. This is getting really old.
Electrical Engineer/Drafter
RE:
Fighting constant clogs with my 2 head XL as well. There seems to be no rhyme or reason when it happens, it will just clog out of the blue. Getting really tired of replacing nozzles and/or hot ends. I print 100% PETG. Most of it is Prusament and the only other filament I use is 3DExtech ESD PETG. I've had both blog numerous times so I can't blame it on the carbon infused ESD filament. I have one right here now with orange Prusament PETG clogged completely up. Nothing I've been able to do can get one working again. I guess I'll try to add 5 degs to the nozzle temp as stated above. This is getting really old.
Did you replace the idler door and latch with PCCF parts? So you still have preload on the doors?