Initially was able to print the calibration print decently with some stringing, but as I repeated my extruder 1 began slipping and no longer outputs a continuous stream of plastic. However, extruder and hotend 2 still work fine. I've taken apart hotend 1 and checked for blockages and cleared out both the nozzle and thread adapter of plastic but still had the same problem after reassembly. Any ideas or suggestions?
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To see this working, head to your live site.
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With the hotend up to temp are you able to push the filament in by hand (whilst pressing down on the extruder arm) and have it extrude?
On the hotend side make sure that the PTFE tubing is in all of the way, it should go into the hotend by about 6cm.
It may just be a clogged nozzle, the kit does include spares, so you may need to just swap it out.