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Ritrazione post stampa

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Buongiorno a tutti,

in questi primi giorni di test sulla mia UM2 sto riscontrando un problema che mi impedisce di fare una stampa dietro l'altra...

il problema che non riesco a risolvere è la ritrazione del filamento dall'hotend dopo un "abort" o comunque a fine stampa che mi crea una deformazione del filamento che in alcuni casi raffreddandosi si blocca nel tubo, in altri invece è deformato(vedi immagine) e quindi non è pronto quando deve uscire all'avvio della stampa.

Cè modo di risolvere questa cosa?

Girovagando per la rete mi par di aver capito si tratti di una impostazione firmware.. cè modo di disabilitarla ?

Questo difetto è causato da qualche impostazione errata ?



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