Retraction nightmare

[Hubissimo 0]

Hello. I'm having a reaction problem. I've tried all calibration suggestions. I'm using duramic pla plus filament. I've run multiple everything. I can't figure this out. Please help. Cr-10 smart with octoprint. Upgraded extruder and Bowden tube. Thank you

[GregValiant 1,330]

I'll take a wild guess and say you will end up between 5.5 and 6.5.

 

Besides the retraction distance have you adjusted the speed?  Faster isn't always better.

Your printing temperature makes a difference.  Cooler will not string as much.

Within Cura's Travel settings are "Retraction Minimum Travel" and "Max Comb Distance with No Retract".  Both need to be set to a distance that is shorter than the distance between the towers but greater than "0".  That might be why those 4 models look so identical - maybe there weren't any retractions.

If you haven't done so - turn off Z-hops.  They can create a string when the head lifts and the nozzle will pull it to the other tower.

[Hubissimo 0]

Thank you. Let me process all of this knowledge. To be continued...

[gfcaim 0]

6mm @ 30mm/sec worked for me but by far the biggest thing was as GregValiant says 'turn off Z-hops'