DXU - Efficient Dual Extrusion Upgrade for UM2+

[LouDFPV 6]

I was wondering, do any of you who did this mod also use some sort of automatic nozzle wiping to reduce oozing?

If so, which and how?

If not, how do you combat oozing?

[ansonl 19]

15 minutes ago, LouDFPV said:

I was wondering, do any of you who did this mod also use some sort of automatic nozzle wiping to reduce oozing?

If so, which and how?

If not, how do you combat oozing?

You use retract the filament extra when switching away from a tool.

 

A nozzle switch retraction distance of 16mm and 20mm/s eliminates ooze for me. And also using the ooze shield  in the slicer. 

[LouDFPV 6]

11 hours ago, ansonl said:

You use retract the filament extra when switching away from a tool.

 

A nozzle switch retraction distance of 16mm and 20mm/s eliminates ooze for me. And also using the ooze shield  in the slicer. 

Do you cool the parked nozzle to a standby temperature when printing in dual color? Or just keep it at the same temp?

[ansonl 19]

25 minutes ago, LouDFPV said:

Do you cool the parked nozzle to a standby temperature when printing in dual color? Or just keep it at the same temp?

Standby temp of 170-180 works for me.
 

I found a good nozzle heat up and cooldown rate that I put in the DXUv2 cura profile on GitHub that will minimize the time waiting to heat using curas predictive heating in advance.