Best posts made by EagleB3

Why the heaters are indicated by the letter "E" in the "Cooling fans" interface? Indeed, in all other places in the interface and in the associated G-code commands, the heaters are designated by the letter "H"...
Is there any logical mnemonic for this?

@fcwilt said in Why are heaters marked with the letter "E"?:

Do they normally have an associated cooling fan?

I do not know. I have a printer without a thermal camera; I just gave an example that the heater is not always an extruder.
Thermal chamber fan - it is possible that it is necessary. Hot air rises, and the temperature must be equalized throughout the chamber, so I think the air will have to be mixed, especially in printers with a large working volume. I have seen printer designs with a heat chamber and a fan embedded in the top panel.