Skip to content

Hotend Values

Setting up hotend specific values

Some of the values with AFC are extremely dependent on your hotend.

Suggested starting values for hotend types (more to be added later) are below. tool_stn and tool_stn_unload are in AFC/AFC_Hardware.cfg, variable_retract_length and variable_pushback_length are in AFC/AFC_Macro_Vars.cfg. For tool_stn, if you have pin_tool_end defined, use the second value; otherwise, use the first value. You may need to increase this value if you are using a ram buffer as the toolhead sensor.

Additional instructions on tuning some of these values can be here.

Below is an example diagram of a Revo Voron hotend on FilamATrix/Clockwork 2:

Warning

These values are derived from community based feedback and are not guaranteed to work for your specific setup. You may need to adjust them based on your specific hotend and extruder setup. Always test with caution.

Hotend specific values

Stealthburner & CW2

  • tool_stn: 52 (if pin_tool_end is NOT defined) / 29 (if pin_tool_end is defined)
  • tool_stn_unload: 62
  • variable_retract_length: 22
  • variable_pushback_length: 20
  • tool_stn: 64.1 (if pin_tool_end is NOT defined) / 41.1 (if pin_tool_end is defined)
  • tool_stn_unload: 105.9
  • variable_retract_length: 10
  • variable_pushback_length: 10
  • tool_stn: 74 (if pin_tool_end is NOT defined) / 52 (if pin_tool_end is defined)
  • tool_stn_unload: 71
  • variable_retract_length: 20
  • variable_pushback_length: 10
  • tool_stn: 60
  • tool_stn_unload: 106
  • variable_retract_length: 22
  • variable_pushback_length: 20
  • tool_stn: 55
  • tool_stn_unload: 62
  • variable_retract_length: 25
  • variable_pushback_length: 23

Stealthburner / Other extruders

  • tool_stn: 79
  • tool_stn_unload: 100
  • variable_retract_length: 30
  • variable_pushback_length: 25
  • tool_stn: 72
  • tool_stn_unload: 68
  • variable_retract_length: 33.4
  • variable_pushback_length: 33
  • tool_stn: 71
  • tool_stn_unload: 105.5
  • variable_retract_length: 21
  • variable_pushback_length: 22.5
  • tool_stn: 78
  • tool_stn_unload: 62
  • variable_retract_length: 35
  • variable_pushback_length: 30

Xol-Metrix

  • tool_stn: 75 (without post extruder sensor)
  • tool_stn_unload: 30
  • variable_retract_length: 32
  • variable_pushback_length: 27
  • tool_stn: 72
  • tool_stn_unload: 54
  • variable_retract_length: 2
  • variable_pushback_length: 0.4
  • tool_stn: 16
  • tool_stn_unload: 70
  • variable_retract_length: 17
  • variable_pushback_length: 15
  • tool_stn: 70
  • tool_stn_unload: 110
  • variable_retract_length: 20
  • variable_pushback_length: 0
  • tool_stn: 72
  • tool_stn_unload: 100
  • variable_retract_length: 20
  • variable_pushback_length: 25
  • tool_stn: 40
  • tool_stn_unload: 100
  • variable_retract_length: 5
  • variable_pushback_length: 3
  • tool_stn: 26
  • tool_stn_unload: 100
  • variable_retract_length: 25
  • variable_pushback_length: 5
  • tool_stn: 30
  • tool_stn_unload: 62
  • variable_retract_length: 22
  • variable_pushback_length: 20

Dragonburner

  • tool_stn: 75
  • tool_stn_unload: 75
  • variable_retract_length: 15
  • variable_pushback_length: 15
  • tool_stn: 55
  • tool_stn_unload: 65
  • variable_retract_length: 20
  • variable_pushback_length: 25
  • tool_stn: 55
  • tool_stn_unload: 100
  • variable_retract_length: 20
  • variable_pushback_length: 15

VZBot Goliath

  • tool_stn: 40
  • tool_stn_unload: 60
  • variable_retract_length: 12
  • variable_pushback_length: 5

Jabberwocky

  • tool_stn: 27.23
  • tool_stn_unload: 96.8
  • variable_retract_length: 21
  • variable_pushback_length: 12.45

A4T

  • tool_stn: 40
  • tool_stn_unload: 65
  • variable_retract_length: 32
  • variable_pushback_length: 27
  • tool_stn: 28
  • tool_stn_unload: 60
  • variable_retract_length: 25
  • variable_pushback_length: 23