Control heat rate of the bed
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I use a magnetic heated bed to attach a piece of spring steel to print on. My bed is heating up relatively fast and I noticed that the piece of spring steel is warping excessively because the center of the bed is hot faster than the edges. Is there a way define a rate in °C per second somewhere to limit the heating rate?
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@dgrat The warping is more likely due to the different thermal expansion characteristics of the spring steel vs the (presumably aluminium) bed, rather than a temperature gradient across the bed. You could limit the rate of heating by reducing the PWM value but that might limit the maximum temperature than you can obtain. Alternatively, you could heat the bed in (say) 10 deg C stages with a pause in between each stage.
