Introduction
This guide demonstrates the steps to replace the nozzle on the Ultimaker 2+ or 3 as well as the steps to replace the print cores on the Ultimaker 3.
References: Changing the material and nozzle on the Ultimaker 2+, Changing materials and print cores on the Ultimaker 3
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In the Ultimaker menu on the printer
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Select "Material"
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Select "Change"
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Wait for the printer to unload the material
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Leave temperature where it was to remove filament
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Remove the nozzle using a wrench
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Turn counter clockwise to loosen
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The nozzle must be heated up when removing or you risk breaking the nozzle
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Align the new nozzle
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Screw in the nozzle enough that it stays in
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Tighten the nozzle all the way using the wrench
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Turn clockwise
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Don't use too much force or you risk breaking the nozzle
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Reload the filament
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If the filament starts leaking around the nozzle during loading, it isn't tight enough
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In the Ultimaker menu on the printer
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Select "Material/Print Core"
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Select "Print Core"
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Select "Change"
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Remove the filament before letting the print core cool back down
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Open the print head fan bracket and remove the print core
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Carefully squeeze the levers to slide the print core out of the print head
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This only applies to the Ultimaker 3
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Insert the new print core in the print head
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Do not touch the chip on the back side of the print core
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Close the print head fan bracket
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Load the filament into the print core
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This only applies to the Ultimaker 3
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