tomnagel

Have you used cleaning filament sticks, or if you have it transparent PC? That works best.

Yes, quite safe assumption

Maximum I’ve seen so far is 9000h

My approach would be to first be sure that the printer and cores are in good shape, and *only then* start printing difficult print jobs. These straws are challenging prints with PVA I think, cause there is very little material on each layer. My advice would be to - print the layershift model that I posted above here - with the AA core and the BB core - with 2 colors of PLA With this experiment, we focus on the printer hardware (incl calibrations), and we take out 1) the PVA (with all its difficulties and challenges) and 2) the challenges of this printed part (by the way: it's perfectly fine to print PLA with a BB core, allthough the printer and Cura will not recommend it (don't do the opposite; don't print PVA in a AA core) Just my 2 cents, I'm also perfectly fine with you guys going forward as you are.

Maybe this is a good place to start: https://support.ultimaker.com/hc/en-us/articles/360012112859-How-to-fix-under-extrusion

This is a useful testprint is you want to make layershifting visible.I have attached the project file. UMS5_layershift.3mf

Hydrosoluble tubing sounds rather counterintuitive. Can you share what you do with that, just out of curiosity?

Did it use to work, and which changes did you made? What material are you using? Do you have all settings in Cura set to default? is the feeder tension indicator in the middle?

It sounds like you are almost there. You can remove the bowden tube at both ends and test 2 things: 1) how much force is needed to extrude filament when you push it in on the top of the printhead manually? Should be roughly around 10N 2) if the feeder is feeding the filament, it should be able to push with roughly 20N (because up to roughly half of the force is lost in the tube) if your extrusion isn’t working, I suspect one of the two is wrong. (and I hope you have all settings in Cura default)

With “lowering” I mean with the mechanical switch on the side of the printhead. When it’s in the lower position, it should be firmly and accurately positioned in all 6 degrees of freedom

I have never seen values of -15 or +16. It's hard to say what is causing this. It seems we need to concentrate on the second print core. The printhead and printcore is designed such that the repositioning accuracy is very high (better than 10mu, more than good enough for what the application requires). The design is certainly good, but something is wrong in your system. Since you do not see this problem when you place your AA core in slot 2, the problem seems to be in the BB core. You could try to print with another BB core in slot 2. Another idea: when you lower the right nozzle, and try to manipulate the nozzle in XY direction, how does that feel? Is it firmly positioned? Do you feel play?

In your previous post, you said you saw layers within 1 material misaligned. Have you not been able to reproduce this? About the pictures from your most recent post: what was you conclusion from your print 1 and 2? All fine? No layer shifts? The pictures with the PVA around the orange object show a non wanted offset. Are you aware that XY offset calibration must be done for all print core combinations separately? so if you are not satisfied with the alignment, you have to do the XY offset calibration procedure with those cores!

It’s difficult to say why this happens, could be in your printsettings. But if you’re satisfied with the print quality, you may want to switch off the flow sensor in the settings of the printer

You say you see that layers of the same material are mis-aligned. So we can rule out the XY offset calibration. is this happening for both materials? Or only for 1 material? A good test print might be 2 separate cylinders, one with each material. and pictures help greatly!

try the new Cura 5.0 beta, it is especially improved to print finer details

if you are measuring the size of the hole on the bottom surface, you also have the elephant foot that makes the hole smaller.

This cable goes to the main board, in the bottom of the printer. ER34 and ER35 are I2C communication errors, and there is indeed I2C comms over that cable. To gain some extra confidence in the hypothesis that the cable is loose on the bottom side, you could start a print job and wiggle the cable a little back and forth. that shouldn't give an error. If you are comfortable with it, you can take a look behind the bottom cover. Depending on the version of the S5 you have, the bottom may be screwed with safety torx screws. Please make sure you remove the power cable before opening the cover, mains voltage is accessible behind the cover. Protect the machine from ESD by taking the right precautions (ground yourself when touching any electronics)

Hi Duyle, you say you are a reseller. Wouldn't that mean that you can ask your distributor for help on this? The pictures that you show are not normal, and together with some help this should be solved.

partnumber 2135 are 5V fans

You can find this into in /usr/share/griffin/griffin/machines/9051.json "bed_level_probing": { "use_footprint_probing": true, // Whether or not to just probe the footprint of the object "probe_selection_method": "mode",// Choose 'frequency' or 'mode' (default) "spacing": 40, // [mm] probing grid spacing. Value based on axis circumference. "margins": {"left":8, "right":15, "front":10, "rear":30}, "dimension": {"width":340, "height":247}, ....

Deprime is the process of unloading the material from the print core. This is critical because the tipshape determines the reliability of unloading and a future loading cycle. I advise to only use materials which have a material profile available in the market place, and please note that compatibility with the Material Station is one of the mentioned properties. Next to Ultimaker Nylon, there are currently 29 Nylons available which are marked compatible with the Material Station.

I'm not sure I understand the question. Do you want to get rid of the support (the blue semi transparent stuff in your 2nd screenshot), because it adds to the printing time? Do you understand what the support is for?

Not yet mentioned here, maybe too obvious: did you let the buildplate cool down fully? It is quite usual to have PLA just pop loose on its own during cool down. I'm also puzzled by the fact that you part breaks on the first layers, that is quite unusal for PLA, where layer adhesion is normally excellent. Could it be the quality of your PLA?

The deprime process needs to be tuned per material, because the tipshape must be such that it can be reliably unloaded. Every Ultimaker material and most 3rd party materials in the Marketplace have a material profile that has the right settings for depriming. Does your material have a material profile from the Market place? Is this material profile flagged as suited for use with the Material Station? Your mileage with generic profiles may vary.

Thank you for the compliments, and the write up!