/diy/ - Do It Yourself

>>2618187
AHH NO IT MAKES SENSE SORRY!
So you have a microswiss all metal hot end. I should have realized it when you said that.
SO basically whats happening is this:
When you manually feed the filament through the nozzle, the extruder goes "la la forward forward forward" and the entire hotend assembly is working correctly heating it all up. Thats why it works fine when manually feeding
BUT when you start printing RETRACTION happens. The all metal hotend has a much larger heating area the allows heat creep up the entire hotend. Normally this isn't a problem as it isn't gloopified enough to matter, but when you're pulling the already liquid filament up and down it allows a VERY large region of the filament to be heated and liquified.
So you're basically pushing solid filament into ever so slightly goop filament that is just heated enough to allow compression. Then it rertracts pulling it way out so it instantly cools basically creating a jam

tldr: all metal hotends require FAR less retraction due to heating system. You've been creating jams out of partially liquid filament in the hotend