slic3r custom gcode - turn on fan as FIRST action?

Hi all -
I am using Repetier/slic3r, and have an E3D hotend with fan that I am controlling.
I want to turn on the E3D fan right away *before* the hotend is enabled.

There is a section for custom gcode for start and end, but the custom start gcode is executed *after* the hotend and bed have reached target temps.
I have been manually editing the gcode after the slicing to provide the right order, but I would prefer to have this done automatically during the slicing.

Any hints on how I can make the fan turn on before the hotend is turned on? If there isn't a way for this, I will have to wire the fan directly to 12v.
Thanks,
Rob

Slic3r should'nt take control of the hotend cooling fan. This function is made for the cooler which cools down the molten plastic.

Quote
Any hints on how I can make the fan turn on before the hotend is turned on? If there isn't a way for this, I will have to wire the fan directly to 12v.

Repetier Firmware can take control of the hotend cooler: you have to swap the settings from "fan Pin" and "Extruder Cooler Pin". Now, everytime the hotend is hot, Repetier will turn on the fan.

vincent.

---

########################
[the-sparklab.de]
OS, 3D Drucker, CNC,...
########################