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ABS to PLA is the tricky direction to switch. PLA to ABS is not an issue.
You need to clean out all ABS out of the feeder teeth and the bowden tube. Especially if the colors are different.
I also strongly recommend you do a cold pull when switching filaments. In fact I do this every time I even just change the color. To do a cold pull (aka atomic method) with ABS set the nozzle temp to >200C (220 is fine) and shove the filament into the nozzle good, then set the temp to 130C, wait for it to get down to 130C and then pull firmly the ABS filament out the feeder. When the filament is half way through the bowden let it cool another 10 seconds before pulling it all the way through the feeder. The resistance from the motor is small but it's best to pull it very fast as the tip goes through the feeder to reduce likelyhood that it breaks off inside the feeder.
Then also cut off the tip of the filament if you see any dirt/spots on it. This will keep your nozzle relatively clean.
Cold pull temp for PLA is 90C. ABS is around 130C if I remember right (or is it 140C?). If you can't pull it out at a given temp raise the temp by 10C steps until you can. You want a strong force - roughly 10 pounds or 5 kg.
Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more.
S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
(Sorry, was out of office when this released)
This update is for...
All UltiMaker S series
New features
Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
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gr5 2,172
ABS to PLA is the tricky direction to switch. PLA to ABS is not an issue.
You need to clean out all ABS out of the feeder teeth and the bowden tube. Especially if the colors are different.
I also strongly recommend you do a cold pull when switching filaments. In fact I do this every time I even just change the color. To do a cold pull (aka atomic method) with ABS set the nozzle temp to >200C (220 is fine) and shove the filament into the nozzle good, then set the temp to 130C, wait for it to get down to 130C and then pull firmly the ABS filament out the feeder. When the filament is half way through the bowden let it cool another 10 seconds before pulling it all the way through the feeder. The resistance from the motor is small but it's best to pull it very fast as the tip goes through the feeder to reduce likelyhood that it breaks off inside the feeder.
Then also cut off the tip of the filament if you see any dirt/spots on it. This will keep your nozzle relatively clean.
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