Filament Dripping

[narrow briar]

I have a issue where the filament drips down out of the nozzle. Cant figure out how to stop it. Right before it prints, I have a wiper brush. The printer wipes then moves to the center of the chamber and heats up the nozzle and that's when the drip happens. Its a Voron 2.4r2

[bold flax]

what hot end are you using？

[narrow briar]

Phaetus Rapido HF

[south wren]

I have the same with my Dragon HF, retraction needs to be tuned because of the taller heating zone. I just do a nozzle wipe after heating to temp just before it start printing

[prisma ravine]

U need more retract

And therefor obviously more purge before printinf

[narrow briar]

Is retract just putting an amount in the code to run in reverse or is there a specific retract code?

[prisma ravine]

U want a combination of commands in order to properly retract filament

Post your current print_end so we know what to adjust

[narrow briar]

Here is my print start

here is my purge nozzle macro that is at the end of that

you can see where I have the retract tabbed out, it is never consistent. Sometimes it dose just a little, other times completely unloads my filament.

[prisma ravine]

U might have missed it but i wrote print_END , not start 🙂 and it will be easier if u use Discords code formattinh and post it as text here

[edgy mirage]

@narrow briar When posting configs or logs, please surround with code fences (```) so that Discord formats them correctly. Example:
```ini
[mcu]
serial: /dev/serial/by-id/usb-klipper-12345-if00
```

[mcu]
serial: /dev/serial/by-id/usb-klipper-12345-if00

[prisma ravine]

Also make sure to click on your flag in #rules so i know your timezone and know when to expect a response

[narrow briar]

[gcode_macro PRINT_END]

gcode:
    G90 
    G1 E-5.0 F300
    G1 Z280 F2000
    G1 Y340 F6000
    G1 X340 F6000
    CHAMBER_GREEN
    M400                           ; wait for buffer to clear
    G92 E0                         ; zero the extruder            
    TURN_OFF_HEATERS
    M107                                   
    BED_MESH_CLEAR
    SKIRT_FANS_STANDBY
    TOOLHEAD_SAFE_POSITION
    

[prisma ravine]

The -5 is the retract

So 5mm

Double it and see how it works

If its still dripping increase it slightly but be careful to not retract too much as the extruder gears still habe to grip the filament

And as i already said, if u retract more, u have to compensate that during purge

[narrow briar]

So what you are saying is if I retract 10 and I want to purge 10 I need to purge 20?

Also in my purge macro when the printer runs it, it dose not wait for the actual purge to be done before it moves on, think this is causing me issues. Is there a command I need to put in?

[prisma ravine]

Its more or less trial and error

First try and see if it stops dripping

If thats the case u figure out if your current purge is enough. If not adjust it

[prisma ravine]

Why should it wait after purging?

[narrow briar]

So in my macro. I have nozzle temp to 260 then purge some out then nozzle temp to 200. It will purge out while its still lowering temp. This has clogged me...

[prisma ravine]

i dont quite understand why u would do that

after purging u should directly start the print

[narrow briar]

I think the thought I was having is cooling the nozzle would help with the ozing. If I fix that then no problem removing that from the macro.
Thanks for your help!