3DUpFitters CR-10 Smart Enclosure Kit Installation Manual - Page 17

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Since airﬂow is key, all of our enclosures come with fans chosen for CFM ratings to

match the cubic size of the enclosures. This ensures that for cool-loving ﬁlament types

like PLA there's enough airﬂow to keep the temperatures in the safe zone.

Room Temperature

Passively heated enclosures are completely dependent on the room temperature as a

starting point. If you're trying to print ABS in an unheated garage in the winter the

temperature inside the enclosure is never going to get hot enough. The reason is the

bed heater has only enough energy to increase temps from the baseline. If that

baseline is 72F, then you've got a good chance of getting into the sweet spot. If the

baseline is 50F, then you'll be lucky to break 72F in the enclosure itself.

ABS and Nylon

You want the internal temperatures higher for ﬁlaments like ABS, which happens

naturally because the recommended bed temperatures are much higher. With the fans

turned on we shoot for internal temps between 35C and 40C for 3D printers that use

E3D hot ends because E3D recommends that temp range to avoid clogging. Keeping

the temperatures in that range it puts the least stress on the equipment and follows the

manufacturer's guidelines.

This works great for people either interested mostly in air quality or those who are risk-

averse and don't want to take a chance of clogging their hot ends or decreasing the

useful life of their printers.

More experienced 3D printer owners though, those for whom a clogged nozzle is a

known risk, might want to run the temperatures higher for less chance warping of ABS

parts or to print nylon. In those cases, you can turn oﬀ the fans or even print one of

the vent covers and just not vent at all. For our internal print farm, we do the later on a

couple of machines where the temperature when printing ABS gets as high as 46C.

They've been running like that for years with no ﬁlament clogging. Even with no

venting of the power supplies, we've never had a power supply fail either. Obviously,

your mileage may vary, as it depends on a lot of variables such as ﬁlament quality and

the quality of the power supply in that particular printer.

If you're looking for the highest temperature's possible, try turning the bed heater on

for an hour before you print.

Perfect Enclosure Printing with PLA

Since PLA is perfectly happy at room temperature, the only reason to enclose it is for

improved indoor air quality. PLA typically prints with a bed temperature of 60C, so it's