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macio

Bug: Prime blob way too big after aborted print (UM3E)

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Hi,

 

just found another bug that I would like to share with you.

 

Reproduction steps with Ultimaker 3 Extended connected via WIFI):

- Start print via Cura over Network
- While printing, pause print via Cura
- Abort print via Cura
- Clear build plate and select "NO" retry on printer panel
- Start another print via Cura over Network
Problem:
The printer makes a way too big prime blob that will cover the hole nozzle in filmament (about 4 times the size of a normal prime blob).
The extruder will mill into the filmament.

 

Would be great to get a fast fix for this issue. This is the 8th bug that we have seen on our Ultimaker 3 Extended within 3 month in occasionally usage.

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1 hour ago, macio said:

Hi,

 

just found another bug that I would like to share with you.

 

Reproduction steps with Ultimaker 3 Extended connected via WIFI):

- Start print via Cura over Network
- While printing, pause print via Cura
- Abort print via Cura
- Clear build plate and select "NO" retry on printer panel
- Start another print via Cura over Network
Problem:
The printer makes a way too big prime blob that will cover the hole nozzle in filmament (about 4 times the size of a normal prime blob).
The extruder will mill into the filmament.

 

Would be great to get a fast fix for this issue. This is the 8th bug that we have seen on our Ultimaker 3 Extended within 3 month in occasionally usage.

It would help to get the logs when this happens, using System -> Maintenance -> Diagnostics -> Dump logs to USB and send them either by using something like WeTransfer or attach them.

That way we can see which firmware is being used (missing in the report) and the state of the printer logic being used.

 

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Update on this one. We've found the problem related to abort and too much or too little priming in the next print.

 

We're still working on the proper fix, as it's a complex interaction of motion being aborted while the rest of the system is continuing with movements to abort the print. All this causes filament positions to be out of sync and thus the large amount of priming later on.

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