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Swapping filament in middle of a print

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I want to change colors of filaments in the middle of a print job. I can not find a post on how to do that. Can some one direct me to a relevant post? I looked at the Multicolor post but those are all separate layers. I don't understand how you can change the filament but not effect the print head location to continue printing.



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Hi Chuck,

There are no way to change the filament during the print unless you changed the feeder with one that let you manually feed the filament in and out of the bowden tube.

Here is the one I use:


Once you have a feeder that allow you to manually feed you can then pause the print at any point and change the filament. You can use the pause at z plugin to pause at a specific height. You will need to manually purge the nozzle with the new filament before resuming.


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On the UM2, settings while printing doesn't have extrusion controls so you cannot manually retract the filament. Additionally the Pause at Z plugin seems to prevent the user from doing anything in the menu which is a bit annoying. As soon as you press a button you resume the print (at least on the UM2)


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