Properly using standby temperature (related to slow heater model)



  • I'll start this by saying I haven't tried manually tuning my heaters since the configurable safety limits have been implemented making manual tuning possible. Basically, the model heats up my hot ends relatively quickly from ambient temperature but when it is anywhere close to temp, it takes minutes to heat up. (It should be noted that I'm using 40W heaters and, as such, my heaters are overpowered to compensate for the strong part cooling blower I have.)

    I have a few questions.

    1. What parameter should I adjust in the model tuning to make it more aggressive? (or should I switch to PID with my own tuning?)
    2. What is a good standby temperature range? (For PLA, I'm printing at 210 and set my standby to 180)
    3. It seems that when you switch hot ends, the heater starts to heat up while the tool starts operating. Obviously, a 30 degree temperature change takes time. Am I being too aggressive with my standby temperature?

    Thanks!


  • administrators

    1. Reducing the M307 gain parameter will make the tuning more aggressive. The risk is that you will get overshoot.

    2. It depends on whether you also use a lot of retraction when a tool goes to standby. Too high and the standby nozzle will ooze. I use 150C for PLA. I haven't tried higher.

    3. You should have command M116 P0 in your tpost0.g file, and M116 P1 in tpost1.g.



  • Thanks, that helps. I'll play around with it and see what I can do.


 

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