Heated Bed Temperature

Heated Bed Temperature sets how warm the bed is while the part prints. A cooler bed makes a weaker first-layer bond, so the part releases more easily after the cooldown; too cool, and the first layer lifts or the corners warp.

Where to find it

In the FarmLoop app, in the Detachment tuning step: Tuning Parameters, then Heated Bed Temperature, the first setting in the panel.

Range: 25 to 75 °C, in 1 °C steps, with a slider and a box.
Starting value: when you load a file, the box shows the bed temperature from the file, the one your slicer set for the first layer.
Plans: Pro and Business. Lite has no Tuning Parameters and prints at the file’s bed temperature.

What FarmLoop changes in the file

Every command that heats the bed gets your value: M140 and M190 with a temperature above 0. That covers the first layer, the later layers and the heat-up at the start of every loop. If your slicer uses one temperature for the first layer and another for the rest, both become this value.
Not changed: the “bed off” command at the end (M140 S0), and the cooldown wait that holds the part until the Cooldown Temperature.

Two bed temperatures, two jobs

Graph of the bed temperature over one loop: the bed heats to the Heated Bed Temperature, for example 60 °C, and holds it while the part prints, then cools down to the Cooldown Temperature, for example 25 °C, where the part is released. The next loop heats it up again. — The bed over one loop. Example values: 60 °C while printing, 25 °C to release.

	Heated Bed Temperature	Cooldown Temperature
Where in the app	Tuning Parameters	Cooldown Settings
When it counts	While the part prints	After the print
What it sets	How warm the bed is, and so how strongly the first layer bonds	How far the bed cools before the part is released
Lower it when	Parts stick hard even after a full cooldown	Parts are still warm and holding when the release starts

The Cooldown Temperature starts at 25 °C. For more on it, see Parts won’t detach: lower the cooldown temperature. If the release fires at a different temperature than the one you set, see Temperature mismatch.

How it changes detachment

Schematic from 25 to 75 °C: the warmer the bed, the more the first layer grips while printing and the harder the release; the cooler, the easier the release, until the first layer lifts or warps. Start from the file's value and go lower 5 °C at a time. — Grip while printing against release after the cooldown. Schematic: where the limits sit depends on the material, the plate and the part. The dot stands for the file's value.

Warmer: the first layer bonds more firmly with the plate. Good for holding the part while it prints, harder to release.
Cooler: a weaker bond and an easier release after the cooldown.
Too cool: the first layer does not hold while printing. Lines lift, corners warp, and tall or narrow parts can come loose before the print ends.

Start from the file’s value. It is in the box when you load the file.
Lower it by 5 °C and process the file.
Watch the first layer of the first loop: the lines should lie flat and the corners stay down.
Check the release after the cooldown.
Repeat until the part releases cleanly. If the first layer lifts or the corners warp, go back up 5 °C.

Over the Processing API

Business accounts send heatedBedTemperature. Left out, the file’s own bed temperature is used. See Processing API: settings.