Ultimaker 3 Crash

[BLOMIX-3D 0]

Dear all,

this morning I returned at the office, hoping that my 3D print was finished.

I found the Ultimaker 3 Extended in a kind of crashed situation.

The printing head had printed that much that the ventilation cover was pushed open, the glass plate had moved.

I've cleaned the printer core, but the cover doesn't fit any more.

Does anybody have any idea how this could occur and wat I can do to resolve this issue?

We are on a critical time line to print a sample for our customer.

I've included some pictures

I hope to hear from you soon!

Kind regards,

Luuk Beenders

Edited April 5, 2017 by Guest

[neotko 1,417]

Can someone correct me if I'm wrong, but the silicon pads are installed '180º' that could explain why the filament did end inside.

I would use a hairdryer to heat the pla and with a long tweezers pull the pla.

If you don't have access to the pla bellow the front fan, I would also try to contact the reseller to try to clarify about the silicon pads if they are right or wrongly installed, but sure some other moderator/user can say if I'm right/wrong.

[ultiarjan 1,223]

About the silicone pads, the biggest hole should be on the right (right?) for the BB.

About the cause, it seems your prime tower broke of.

This tower design is just not good enough for PLA/PVA. I feel it would be much better to have a design with non or only partially overlapping towers, so there's always a PVA-PVA connection.

@nallath @SandervG whats the plan with towers? anything on the CURA roadmap anytime soon?

Edited April 5, 2017 by Guest

[tomnagel 126]

I'm sorry to see this! This is disappointing to say the least.

The silicone pad is installed correctly I think, though it is a bit hard to see.

Prime towers have been disabled by default in Cura 2.4. This makes printing PLA/PVA not only more reliable, but also it saves you time and material. I would strongly recommend upgrading to Cura 2.4, and use the default profiles, and UM materials. For non-UM materials, you may need to tweak some slicersettings.

I see no mention of the used material, I will assume it is PLA. Can be removed with hot air. Please know that the heat breaks in the hot end do not allow any large forces on the hot-end, so you need to be gentle.

You may want to contact your reseller for help.

[Nicolinux 288]

I don't agree with leaving out prime towers because from my experience print quality always suffers.

If you fix the mess and need to re-print, just enlarge the prime tower and move it closer to the model.

If you want a second layer of "security" for a failed prime tower, enable the "ooze shield". This will create a shell around the model and if the prime tower breaks, the excess filament would catch onto the ooze shield.

[ultiarjan 1,223]

Prime towers have been disabled by default in Cura 2.4. This makes printing PLA/PVA not only more reliable, but also it saves you time and material.

 

while this may be an option in some cases, specially when printing stuff only for it's looks, when you want a more mechanically strong part you may want to avoid the default profile temperature drops..... and you will need at tower IMHO.

Anyhow I feel we need the option to use a tower thats suited for use with PVA, the current option is clearly not the best.... It should not be that hard to create a "per material tower" i think.....

Edited April 5, 2017 by Guest

[BLOMIX-3D 0]

Thank you all for your reactions.

The materials I'm using are PLA and PVA both of Ultimaker.

I've started the print after cleaning up, fixing the ventilation cover as it was bend and callibrating the UM3 Extended again.

I seem to have quit some difficulties with the PVA filament. It isn't a steady process at this point in time.

Can anybody advise me if the product is easier to produce while standing upright in stead of laying flat?

I will install CURA 2.4, as I have now 2.3.1.

Any further good suggestions?

Many thanks so far!

[BLOMIX-3D 0]

Just one other question:

I've now used 2 bad prints and with cutting, glueing and sanding I made a finished sample of it. Is there any way how I can restart the print at a certain point or not?

Thanks!

[tomnagel 126]

I seem to have quit some difficulties with the PVA filament. It isn't a steady process at this point in time.

Which problems have you seen other than shown in the pictures above?

If your hardware is fine, you use Ultimaker materials, you use Cura with the default profiles and, especially in case of PVA, the ambient climate is within spec, printing should be reliable.

[ultiarjan 1,223]

Can anybody advise me if the product is easier to produce while standing upright in stead of laying flat?

I general with dual extrusion flat is better;

- less nozzle changes, so it saves time

- a small and tall tower will more often fail than a shorter tower.

but ofc sometimes you have too... but in this case I dont think so.....

* one other note, I think you are using a crazy amount of support..... PVA is not very cheap.... and if that thing is some sort of closed bottle it will take ages if ever to dissolve the PVA....

[BLOMIX-3D 0]

Okay, thank you for your feedback. I running with the standard setup, but with dense infill. I will try to reduce this and see the result. I've changed it from light to dense because when the bottle was being closed, i continuously had problems.

I going to try it now!

[tomnagel 126]

I hope people don't get annoyed by me repreating the same message in different forum topics: as a beginner with the UM3 (even when you are an experienced UM2 user) don't try to tweak the settings that are in the default profiles.

The object you have in the pictures looks like a very simple object, that would need no changes to settings at all. Don't increase the infill, don't manually change layerheights don't tweak the temperatures etc. Use the stable release of Cura (2.4), and you will be fine.

When you get to know the printer and its behaviour, you can maybe optimise the settings more towards specific designs that you print.

[tomnagel 126]

I hope people don't get annoyed by me repreating the same message in different forum topics: as a beginner with the UM3 (even when you are an experienced UM2 user) don't try to tweak the settings that are in the default profiles.

The object you have in the pictures looks like a very simple object, that would need no changes to settings at all.  Don't increase the infill, don't manually change layerheights don't tweak the temperatures etc. Use the stable release of Cura (2.4), and you will be fine.

When you get to know the printer and its behaviour, you can maybe optimise the settings more towards specific designs that you print.

[BLOMIX-3D 0]

Dear Tomnagel,

completely agree. I've just selected the: Print Setup / Infill / Dense, that's all.

I've changed to Cura 2.4, custom setting everything, but I'm not able te get out a reasonable product anymore.

I'm in contact with the reseller and dropped an e-mail to ultimaker, but until now no solution.......