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Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

I've noticed with new materials our printer hasn't printed before, while preparing to print, it extrudes a bunch of strands of material off of the build plate a bunch of times. Is this for some sort of calibration? It doesn't seem to happen a second time with the same material.

 

 

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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

I have the same problem, except it happens on every print. It currently adds 10 to 15 minutes to every print job. This is plainly wrong since it serves no purpose to do it every time. How do I report a bug?

 

My S5 Pro prints about 2 metres of extruded filament at the beginning and end of every job. Even if the filament material has not been changed.

 

The very worst design feature of the S5 is that it tells you next-to-nothing about what it is doing. I suspect a good UI is too much to ask of a slow interpreted Python3 running on crash-crazy linux? Yes sometimes when I switch on the S5 (latest firmware 12-12-2019) it just gets stuck and needs to be power-cycled. When will these poor linux-based system designers understand you must always put a reset button on a linux box! It's far less stressful (for the system) than power-cycling.

 

So I can't be that special that I'm the only one experiencing this material-wasting behaviour, so I'd love to hear from anyone with a known workaround on this one.

 

P.S. The images show only a part of what gets wasted on every print - double if using support material.

IMG_0491.JPG

IMG_0492.JPG

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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material
2 hours ago, Programify said:

How do I report a bug?

Best is to contact your reseller, because this is something with the firmware, not Cura in my opinion. 

I guess it has something to do with he new material station which affects also stand alone S5 printers.

 

Your reseller can also tell you how to step back to the previous firmware 5.2.11 which is working fine.

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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

I can see a little bit of the material station in the second image. The repeated priming is default behavior with firmware 5.4.27 for S5 Pro Bundles. Revert to 5.2.11 is not a good idea in this case as that version does not have support for the Material Station.

Improvements of that procedure are currently worked on afaik.

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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

In my original post, I was careful to say (2nd paragraph) "My S5 Pro" so hopefully that would be interpreted as "Ultimaker S5 Pro Bundle".

 

Smithy's advice conflicts with everything that I have read about setting up an S5 Pro, so no I won't be downgrading today for the reasons Dim3nsioneer suggested (Material Station). Some advice I have read suggests that even attempting to run the Material Station with an S5 with anything other than the 12-DEC-2019 release could damage/destroy some or all of the S5 Pro Bundle's delicate internals.

 

I suspect there are no real S5 Pro experts (customer facing) since we are talking about a brand new hardware / firmware combination, no one has had enough time (10,000 hours experience - about 5.95 years) to become a true expert.

 

Right now the firmware upgrade I need should allow me to stop the machine from wasting valuable time and materials every time I print something. A more responsive abort would be nice too. Waiting at least 5 minutes for an abort to complete is unforgivable. Especially when the reason you want to abort is because the firmware can't handle blockages due to filament snapping in a boden tube after being fed PVA stored in the Material Station.

 

My reseller assured me late last week that there is a new firmware available which solves this serious problem. I downloaded the latest release: "um-update-5.4.27-20191212.swu". I assume that the release file has the character sequence "20191212" embedded because it is the 12-DEC-2019 release. The one that's slowly and pointlessly extruding material into thin air (see pictures in original post).

 

So can anyone advise me on when the fixed firmware will actually become available?

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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

Ultimaker does not announce their firmware updates in advance. When a new version passes the testing procedures currently in place it is usually published something like a day later. If it does not pass the testing procedures we will never know of that version.

Ultimaker is looking into the topic of unnecessary priming in the Pro Bundle. Please keep in mind some priming is necessary to ensure that the printcore is emptied from old material and properly primed with the new material. The amount necessary is logically a bit larger than what you would extrude in a standard S5 in order to be on the safe side in terms of color and material mixing. But if the same material is loaded as was in that printcore during the previous print job one could skip the extensive priming and just make sure the printcore is primed at all. This is what is being looked into atm afaik.

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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material
On 1/20/2020 at 12:29 PM, Dim3nsioneer said:

Please keep in mind some priming is necessary to ensure that the printcore is emptied from old material and properly primed with the new material. The amount necessary is logically a bit larger than what you would extrude in a standard S5 in order to be on the safe side in terms of color and material mixing. But if the same material is loaded as was in that printcore during the previous print job one could skip the extensive priming and just make sure the printcore is primed at all.

 

In my experience, this would be a trivial issue to overcome in firmware. Assuming the firmware was written in a worthwhile language on bare metal. However, knowing crash-crazy Linux and Python are involved, simple improvements may overwhelm such novice developers.

 

Is there anyway emebedded systems developers can get their hands on the 'firmware'?

 

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Posted (edited) · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material
On 1/20/2020 at 1:29 PM, Dim3nsioneer said:

Please keep in mind some priming is necessary to ensure that the printcore is emptied from old material and properly primed with the new material.

 

Yes priming is necessary, and I personally don't mind the waste material. But just unloading into the chamber is a really bad idea. Every time it unloads one of these long strings there's a big chance it will get caught by the z-screw.

Edited by NBull

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Posted (edited) · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

I'm having the same issue with S5 and material station but I already have a newer firmware 5.5.12. Same phenomenon - several repeated extrusions of 25-30cm strings before and after every print. Can't really see any benefit of it just waste of material and time. I'm not aware of any feature to adjust or switch it off. For repetitive prints it would be nice to have an option not to unload & reload the filament from the material station.

 

Edited by elescs
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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

I'm having the same issue with the S5 Pro Bundle.

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Posted · Ultimaker S5 Preparing to Print Takes a Long Time and Wastes Material

I have about a gram of material waste every print cycle from the start and at the end. If a firmware update came out allowing the option to choose whether the print core should be primed or not that would be most welcome. I am in manufacturing and the time added in addition to material waste is something I wish could be avoided...

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