Nozzle Wipe Support¶

The nozzle wipe custom hook is called before any bed mesh or z-offset nozzle touch is performed in START_PRINT.

Load Cell Wipe¶

For the loadcells probe and loadcells for z-offset Simple AF installs its own nozzle wipe, loadcells_wipe.cfg, based on Creality's stock nozzle wipe. Before the bed mesh, START_PRINT taps the bed to find its height, then scrapes the nozzle along a short line on the bed so plastic on the tip doesn't throw off the load cell taps.

K1C / K1SE Brush

On K1C and K1SE printers, Simple AF will configure the default nozzle wipe to assume a brush is mounted to the back of the build plate. If you are using an aftermarket build plate on a K1C or K1SE that does not have this brush, you should disable the brush by setting variable_k1c_brush to False in the [gcode_macro _LOAD_CELL_WIPE_VARIABLES] in the loadcells_wipe.cfg and Save and Restart. By the same token if you are not on a K1C or K1SE, but are using a K1C / K1SE build plate with a brush, you should set the variable_k1c_brush to True.

Brush collision risk

If you have a non K1C / K1SE build plate with a silicon brush for wiping on your print bed you should remove the Simple AF default wiper by removing the [include loadcells_wipe.cfg] from your printer.cfg, and manually clean your nozzle or use a third party nozzle wiper.

Warning

The load cell wipe needs an up to date Kalico, with an older Kalico the wipe is skipped with a message telling you to update.

Where it wipes¶

Setup	Wipe
loadcells probe	back of the bed, middle third of X, 3 to 5mm in from Y max
loadcells for z-offset, front or side mounted probe	back of the bed
loadcells for z-offset, single load cell (Ender 3 V3 SE and Ender 3 V3 KE)	left side of the bed, one tap 20mm in from the front
loadcells for z-offset, rear mounted probe	left side of the bed

Rear mounted probes always wipe on the side

With loadcells for z-offset and a rear mounted probe the wipe is always done on the left side of the bed, a rear wipe could drive the probe into the frame, there is no option to wipe at the back.

A single load cell sits under the front left of the bed and can't feel a tap much further than 30mm away, so it only taps the start of the line, 20mm in from the front, and uses that height for the whole wipe.

If your probe is mounted to the left of the nozzle the side wipe is moved right, so the probe never goes further left than the nozzle can (X min).

Running it by hand¶

The temps default to PLA:

_SAF_NOZZLE_WIPE EXTRUDER_TEMP=210 BED_TEMP=60

To use your own _SAF_NOZZLE_WIPE instead, remove the [include loadcells_wipe.cfg] from printer.cfg.

Third Party Nozzle Wipes¶

The following nozzle wipe solutions are third party and there is absolutely no support available for them via the Simple AF discord, these are the wipes we are aware of; the support team has limited experience with them.

Danger

It can be dangerous to use a rear mounted nozzle wiper with a rear mounted probe, there is a strong likelihood of destroying the probe or damaging the printer!

Apart from the Load Cell Wipe Simple AF does not package any predefined nozzle wipers, but we do provide a _SAF_NOZZLE_WIPE custom hook for you.

The _SAF_NOZZLE_WIPE will be passed the EXTRUDER_TEMP parameter from START_PRINT to give you a bit more flexibility for implementing your nozzle wiper macros.

So for instance you could use the EXTRUDER_TEMP in the _SAF_NOZZLE_WIPE macro like this:

[gcode_macro _SAF_NOZZLE_WIPE]
gcode:
    {% set EXTRUDER_TEMP=params.EXTRUDER_TEMP|float %}

    # lower the temp to something where nozzle does not ooze to do your thing
    M109 S150

    # then set the nozzle temp
    M104 S{EXTRUDER_TEMP}

This might be useful for instance if you need to adjust the nozzle temp as part of your macro but then set it to the target temp, although in that case it actually would probably be better to get the existing target temp at the start of your _SAF_NOZZLE_WIPE in a different way:

[gcode_macro _SAF_NOZZLE_WIPE]
gcode:
    {% set target_nozzle_temp = printer[printer.toolhead.extruder].target %}

    # Do the nozzle wipe thing here whatever it is

    # then restore the previous nozzle temp
    M109 S{target_nozzle_temp}

Nozzle Wipe Options¶

The following are the nozzle wipe macros we am aware of, we provide absolutely no guarantees about them!

Config overrides should save and restore these additional .cfg for you automatically, just make sure its saved directly to the config/ directory and not a sub-directory and you should be good to go!

Purcell Nozzle Wipe¶

You can find the advanced_nozzle_cleaner.cfg file at https://www.printables.com/model/1023575-advanced-nozzle-wiper-for-creality-k1-series, and upload it to your config directory.

Make sure its included after [include start_end.cfg] in printer.cfg

Then make a few changes to advanced_nozzle_cleaner.cfg:

Warning

You must replace any M106 P0 references with just M106 as P0 is not supported to reference the part fan. In order to mitigate performance issues that were causing klipper to crash with a move queue overflow we had to migrate from [fan_generic part] to [fan] for the part fan. M106 P argument still works for chamber and auxiliary like before.

You need to disable this:

#[gcode_macro CX_NOZZLE_CLEAR]
#rename_existing: _CX_NOZZLE_CLEAR
#gcode:
#  WIPE_NOZZLE

Add this:

[gcode_macro _SAF_NOZZLE_WIPE]
gcode:
    # make the nozzle wipe be a good citizen and restore the target temp afterwards
    {% set target_nozzle_temp = printer[printer.toolhead.extruder].target %}

    WIPE_NOZZLE

    # then restore the previous nozzle temp
    M109 S{target_nozzle_temp}

Calin Nozzle Wipe¶

For Calin solution it's all on the website: https://makerworld.com/en/models/1547901-creality-k1-max-silicone-nozzle-wiper

Calin has updated the docs for their macro to correctly use M106 macro so no changes should be required beyond what is documented on that makerworld site.

Cart's K1/C Nozzle Wiper¶

For Cart's Solution, its all on their GitHub: https://github.com/Cartrigger/cart-k1-wipe

It should work out of the box with any K1 or K1C if they have a compatible bed.