Keep getting 'One material seems to be empty' while printing TPU

[MichielJacobi 1]

Hi, 

 

I've been printing for a while now using two Ultimaker S5. The only problem I encountered so far is that when I am printing with TPU, the printer repeatedly stops the print and prompts the message 'one or more materials seems to be empty'. I'm printing with regular Cura settings and does not have altered the tension on the feeder gear. What can I do to prevent this error message? Lowering the print speed or feed rate? It is a real bummer to come back after a weekend and only see some layers being printed and this message on display. 

 

Regards, 

 

Michiel

[Dim3nsioneer 504]

Flexible materials seem to trigger more often wrong flow-events than other materials. I would expect that Ultimaker is currently working on improving that situation and providing a fix in a future firmware version. Something you can do for the time being is to disable the flow sensors in the settings menu of the S5. This will prevent the printer from a wrong interuption but of course might lead to a lost print if a real flow issue occurs.