Fans for controlling heated enclosure temps.
I plan on having a couple fans on top to turn on when the enclosure gets too hot. I will use the bed heat to heat the enclosure. I want to option to print ABS or Nylon.
I'm guessing I'm going to use the pwm slots either on the duet2 or the expansion board. But I dont know how to configure.
mrehorstdmd last edited by
Fans feel cool to skin because they promote evaporation of sweat. They don't actually cool the air, they stir it up. You don't want a lot of air movement when printing ABS. If the enclosure gets too hot with the door closed due to the bed and hot-end alone, find a way to vent the enclosure without actively stirring up the air. Maybe leave the door open a little. You want the enclosure to be at 50C or so to prevent delamination problems with large ABS print. When an ABS print is finished, you want to let it cool slowly.
@mrehorstdmd To clarify I will use these as exhaust fans on the top with the outside air moving from bottom up.
See if this helps.
In RRF3 you could have a temp sensor and have the fan thermostatically controlled based on the temp.