IRobertI

To help, people would probably like to know what your current settings are and what the goal is. I can say, "increase your print speed by 1" and I've technically answered your question 🙂

Just something to keep in mind, Cura is metric. So if you export your models in imperial you'll have to scale them accordingly in Cura.

You have opened a gcode-file rather than an STL (or other 3d-model file supported by Cura), that's why you can't change any settings.

Unless you've turned off active levelling, the printer will measure and take care of the height offset between the two cores. To be a bit pedantic, the UM3 can also use Breakaway. The material was launched before the S3 and S5 existed.

Not sure I agree with you here. Breakaway is made to be printed in the same(ish) way as PVA, in direct contact with the material you're trying to support. If you're going to have 1mm distance between support and support-material you might as well use the build material for support and save time and money.

Do a lift switch calibration and you should be good to go: https://support.ultimaker.com/hc/en-us/articles/360011474120-Lift-switch-calibration

I mean, it's almost one option as it is. Changing "Support extruder" sets all the options below to that extruder (which you'd have to do regardless) and then change "Support infill extruder" to your other extruder and you're done. It's not a super common thing that people ask for since quite often it's not applicable as the support would be stuck inside the model.

You can just change which extruder to use for the different areas of the generated support.

I've been working with Ultimaker technical support for six years and I don't think I've ever had that be the root cause of layer shifts/leaning prints. Not saying it's impossible and I might have forgotten such a case, just that it's not something I can remember seeing. 99% of the time it's the pulleys on the motor shafts when it comes to layer shifts. https://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide#shifted https://support.3dverkstan.se/article/23-a-visual-ultimaker-troubleshooting-guide#leaning

If you look at the right print core, does that lift/lower as it should during the process? Does the print head move to the back right corner and use the little "bracket" there to actuate the little lever on the side of the print head? If it doesn't, you will need to perform a "Lift switch calibration" (it's simple and quick to do). It has happened on occasion that printers have lost this calibration. https://support.ultimaker.com/hc/en-us/articles/360011545039-How-to-calibrate-the-Lift-switch-on-the-Ultimaker-S5

Hello there. Just in case you missed it, your previous post has already been approved a long time ago. Here it is for reference:

Yes, I meant that there are pre-made scripts that will let you pause at specific heights or layer numbers. No way to automatically pause for supports roofs though I'm afraid. Then again I don't think it would be difficult to create a script for that (for someone who is used to writing such scripts).

Extensions -> Post Processing -> Modify Gcode -> Add a script -> Pause at X

Hmm... I'm not quite sure how this would work? A single layer of plastic directly on the platform will still be at the same temperature as the glass. I don't think I've ever heard this suggested before so I'm a bit hesitant to accept it straight off the bat. Since you're seeing temperatures of up to 230C for PLA, I would make sure the temperatures in the profile are actually correct. A higher than normal print temperature and possibly bed temperature can cause both bad overhangs and warping. Or maybe you've chosen the wrong nozzle diameter in Cura? If you've chosen 0.6mm or more, then the 230C temperature is expected. When it comes to the shifting, in my experience, 99% of the time this is due to loose pulleys on the motor shafts (or possibly that they are too far out on the shafts and rubbing up against the walls of the printer). While it's important that the axes are held in place and the belts run straight, I've seen printers produce normal prints with axes that are bouncing 1cm back and forth during the print, barely staying in the frame. So I don't think this is the cause in this case.

How is your third fan doing? The one on the backside of the printhead. It should be spinning as soon as you power on your printer or when the nozzle reaches ~40C (depends on the age of your mainboard).

It can be turned by inserting something like a small allen wrench or screw driver into the holes and then turning. To give yourself some more space to work you can remove the front left screw from the print head so that you can turn further before having to reposition. Not necessary now of course, but good to know for the future 🙂

Your block simply isn't screwed in far enough into your hot end isolator (the thing with the holes). If it doesn't want to go any further it's because you have dirt in your threads most likely. Try heating the block up and tightening again. The isolator should be able to screw in all the way until it touches the block.

Post a picture of what your setup looks like instead, that would make it a lot easier to figure out what's going on.

Check if you have any cracks in your sliding blocks. If you do, there's the reason. Your nearest reseller should either have them or be able to get them for you. They're inexpensive, but it's a bit of a pain to do the swap.

It could also be that the z-bearings aren't sliding well on the z-rods so wipe those down with a cloth and maybe add a tiny drop of oil. I would change the short belts as well while you're at it: https://fbrc8.com/collections/ultimaker-2-spare-parts/products/timing-belt-200-x2 I've never really used any sort of solvent when cleaning the screw. I usually just move the bed up, wrap some cloth around the screw and then push the bed down. Rinse and repeat a few times. Then apply a bit of fresh grease and move the bed up and down a couple more times to spread it out. See what the prints look like after that, hopefully that takes care of it. It's also possible that it's inconsistent extrusion causing the lines to appear. It's one of those things where there can be several things at play.

There's not a singular answer to that question since it depends on what you're trying to create and what type of person you are (as in, what type of approach to designing best suits your way of thinking). But for general purpose CAD work, Fusion 360 seems to be the most popular at the moment.

This happened sometimes on early UM2 machines, mostly with the top part since they were tightened together a little bit too hard for a while. Thankfully the replacement parts are cheap (and would've been covered by warranty when the machine was new). I would say the extrusion upgrade kit (2 -> 2+) is well worth the investment if you can afford it. Full disclosure, I'm slightly biased since I work for an Ultimaker distributor and reseller, but I don't think we've had anyone that has regretted that upgrade. The 2+ is a great machine IMHO.

A picture of the "ribbing" would be helpful. Could be as simple as the z-screw needing to get a bit of a clean and re-grease. As for the noise, more than likely it's the belts that are getting old and dry and need to be replaced. Getting to the steppers is very easy, just remove the white metal covers, they're held in place by two screws, on from the back and one from the side.

If you've heated the nozzle up there isn't really anything holding it except for the threads so that sounds strange. A picture/video would probably help to see what might be going on. A needle is probably not necessary. Try to do a few "atomics"/cold pulls and see if that gets rid of the blockage.

If you get rid of the plastic that sticks out through the opening at the bottom of the print head you can usually remove the fan shroud and front cover to get better access. Both of them will come off as one unit if you unscrew the four screws on top of the fan shroud. Be careful when you start pulling it off since the wires will still be connected at the back of the head and they might have been caught in the blob of plastic (unlikely). Once you get the fan shroud out of the way it will be much easier to deal with the blob.