<p>I'm using Cura to slice prints from a biodegradable polyester called PCL (<a href="https://en.wikipedia.org/wiki/Polycaprolactone" rel="nofollow noreferrer">Polycaprolactone</a>).</p>
<p>I need to print @ ~70 °C but extruder does not run until nozzle reaches 175 °C.</p>
<p>Which setting to change so extruder will turn on when nozzle temperature has reached 70 °C?</p>
<p>Here are my settings for the material:</p>
<p><strong><a href="https://i.stack.imgur.com/IIh9C.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IIh9C.png" alt="strong text" /></a></strong></p>

70 °C is a specialty filament. It is well below the
```
MIN_TEMP
```
defined in any sane firmware. In Marlin, you
can't
turn on the extruder in any way, while this is online.
You do need to define your firmware to allow such a print - either by dropping the value in the firmware or disabling Mintemp-protection and then
flashing that firmware
. That is quite invasive.
To
temporarily
disable the
```
MIN_TEMP
```
, you need to run the G-code
```
M302 P1
```
or
```
M302 S0
```
-
```
M302
```
on its own does nothing. However, some firmware distributions might explicitly prevent these two commands of
turning off
the check.
In that case, you might use
```
M302 S65
```
or similar to drop the
```
MIN_TEMP
```
.