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PETG Clogging on Large Prints

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Posted · PETG Clogging on Large Prints

I have been stuck for several days on this issue using PETG.  No matter what I try it is the same problem.  I am using a 1.2mm nozzle, Volcano Hotend, on a  Modix Big 120 and I am printing an object 1100mm long.  Nonstop parts are fine, but when the extruder travels from one part to another and it crosses over an existing line, there is a little bit of oozing that wipes and then clogs the very end of the nozzle. It happens usually in the same spot.   I have messed with retraction settings, sped 150mm/s across the machine, adjusted temperatures from 240C to 280C, and nothing seems to work.  Has anyone printed PETG with a 1.2mm nozzle before and can get me the best settings?

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