Tafelspitz

I am very happy to report that after replacing the two fans everything is now up and running again. Printing the first post disaster part as I'm writing this. It runs very smoothly indeed. In fact, the two new fans seem to be significantly quieter than the old ones. So I gained something out of the disaster after all. And I did learn a great deal. So here's to a happy end. Thanks again to all of you who stood by with sound advice. Very much appreciated.

Yes, indeed! 😄 Turns out I inadvertently fryed both fans with the heat gun in the process of freeing the Olsson block from its nylon mess 🥳 There I was paying careful attention not to overheat any wires and other parts, but obviously I messed up with the fans. But then the heatgun is kind of a blunt instrument. Anyway, replacements are already on the way, not much of a problem. On the bright side I got to know the whole printer better. You learn the most about any instrument or tool by taking it apart 🙂

After replacing the hotend and almost every other parts in the printhead known to mankind, the printer is now up and running again. Kinda. Alas, I must have unplugged the fan wires somewhere along the cumbersome process of threading the sensor and heater wires. So back to taking everything apart. Again 🙄

The blowtorch did the trick. I wouldn't say good as new, but I guess it's still very much usable. Thanks again! 😃 👍

Brilliant idea. Gonna try this later. Thanks!

I got the hotend free from its aluminium support. Heating the whole thing up and then turning the isolator got that one free. After that I got a couple of chunks of the Nylon blob away and finally got through to the screw that holds the hotend to the aluminium plate. Whew. I have already ordered all of the necessary spare parts. Maybe I can yet salvage the ruby nozzle, but it's going to be tough and messy. Maybe I'll be able to dissolve the Nylon filament in acetic acid (don't worry, I'm a professional) but then this may attack the brass as well. But it's at least worth a try. If it goes wrong or doesn't work I'll be no worse off that now.

The reason why I cut the wires is that I got the dreaded "heat sensor error" after turning on the printer, so I couldn't heat up the nozzle. I'll now try to unpack the hotend by means of the heat gun. Messy business.

Thank you guys and gals 😃 Using the heat gun trick I got as far as disassembling the fan plate and heat coupler. Some prying with a screwdriver was also involved. Now the hotend is a different story... there's a thick layer of Nylon all around it and no way of getting to the screws. Let's see what heating the hotend leads up to. I'll keep you posted. However this turns out, I'm probably gonna end up ordering a new Olsson block, heater, sensor, and nozzle. Could have been worse, I guess.

As the title implies, I'm a bit in trouble 🤔 I Started printing with Fiberforce Nylforce carbon fiber and at first, everything ran smoothly. After babysitting the print for the first couple of layers I then left to go about some othe business. When I got back to the printer later, it was stuck with "Temp Sensor Error". Apparently the print got loose from the bed and a big blob of material is now stuck around the nozzle and oozed inside the print head where it accumulated around the temperature sensor and what not (see pictures) 🤕 Since the carbon fibre is rather tough I can't see this getting easily removed from inside the print head. Any tips, hints or general advise how to best solve this? Short of replacing the whole print head I can't see how to best proceed.

Will do, as soon as the package arrives at my doorstep ?

...where it says "experimental" ?

"Ultimaker Tough PLA can be printed on Ultimaker S5 and the Ultimaker 3 family printers." (Source) I guess, as it is "as easy to print as PLA", it will also print perfectly on an UM 2+ ?

Have you checked the actual diameter of your filament? (Determine at several places in 2 directions (90°). I once had a woody filament that was only about 1,6 mm despite its declaration of 1,8 and it also under extruded for this reason. Giving Cura the actual diameter of the filament fixed this issue. Other than that, I guess it could be that your teflon coupler needs replacement.

Just when you thought you had all of the preferences checked out. Thank you so much!

Just a thought, and I'm sure it has come up somewhere already, and it's not a bug per se, but a minor annoyance. But wouldn't it be nice if the slicing could be held off until all of the settings in cura are made? I find it mildly annoying, especially with bigger and more complex builds when cura starts slicing after every single parameter change. Or, at the very least, make it optional to behave one way or the other as I'm sure some folks like it the way it is

Thank you guys!

Stupid question: how doI get the new firmware into the machine? Couldn't find a "howto"

I don't mean to gripe and grumble, but I genuinely wonder how this bug could have slipped the beta version? 3.2.beta already had it, after all.

Thanks. Good to see the problem has been identified.

@csmicfool: hold the shift key on your keyboard while right-mouse-dragging.

Short answer: Yes, I'm absolutely, positively sure. And let me qualify this statement by saying that I would have to physically haul the printer across the room to even get it in range for an USB cable. Long answer: I bought my UM2+ early in January. While setting it up, I installed Cura 3.1, which was the latest version back then, and updated the printer's firmware. I then disconnected the USB cable and moved the printer to its dedicated place across the room, where it sits ever since. I did many successful prints with 3.1. After the 3.2 beta came out, I wanted to give it a try, so I installed it along 3.1 and sliced a couple of things with this beta version. All of them failed due to the problem in question. I posted about this in the other thread, deleted 3.2 Beta and again successfully printed stuff sliced with 3.1. Along came 3.2 stable. I decided to give it a go and everything I printed with it instantly failed again. So I once again went back to 3.1 and everything is printing fine once again. Just the other day I printed some more filament spool clips from a file I had on my memory card. The print failed and I just then remembered that the file in question was sliced with 3.2 beta back then. Synopsis: - The printer firmware is from Cura 3.1. - Everything sliced with Cura 3.1 prints fine - Everything sliced with Cura 3.2.x fails.

That's affirmitive. See above.

Yes, see posts above Welcome to the club. I don't think it's the firmware since it only happens with prints sliced with Cura 3.2 and not with 3.1 on my printer with the same firmware (_2.6.2).

Thank you for looking into it. Here's the part sliced with 3.1. I'm not sure I have all the settings 100% identical to the version created with 3.2, but it mostly should be. dowel3_1.gcode BTW, after carefully watching what happens at the end of the 3.2 print, I don't think that the nozzle presses down in this sense. It looks more like the nozzle stays on top of the print and the printer extrudes a blob of plastic on top of it, resulting in the nozzle clogging and the extruder grinding. After that, the print head homes.

Yes, after some prints I can now say with confidence that after downgrading to 3.1 it is again back to normal. Even the yellow peg printed OK after slicing it again with 3.1 Must be an issue with 3.2.