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filament roughness

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There has been grinding by the feeder. It looks like the print had heaps of retractions, This could have caused it.

It can also be caused by a nozzle block, the feeder motor getting to hot or a tangle in the filament roll.

If you insert it back into the printer then you may need to push it till its passed the part with the grinding. there maybe a slight defect in your print when the damaged part reaches you nozzle but you probably wont notice it.

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