3DUpFitters Prusa i3 MK3 Installation Manual - Page 16

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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 going to heat the

enclosure less than ABS right oﬀ the bat. Always make sure to print with an enclosure fan and

monitor the internal temperature, which ideally should be in the 30-35C range or lower if you

can get it.

If you'd like to lower the temperature further you can always buy a more powerful fan, but the

easiest thing to do is just crack the front door a little to increase airﬂow. But won't that let out

all of the volatile organic compounds coming oﬀ the hot end? The key is the negative pressure

combined with the fact that the particles are extremely small and light.

As you can see, the fan keeps the air ﬂowing in and the harmful particles ﬂowing into the vent

or ﬁlter.

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