3DUpFitters CR-10 Smart Enclosure Kit Руководство по установке - Страница 16

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The ﬁlament feeds into the extruder through the gaps in the side doors. Position

the enclosure from front to back so that the slit lines up with the extruder's

ﬁlament input hole.

11. Managing Enclosure Temperatures

There's not much to a 3D printer enclosure. Although ours look fancy, functionally

they're not much diﬀerent than putting a cardboard box over the printers since both

designs are passively heated by the beds. How complicated can they be? This

section will explain a little about how they work, and how to manage the temperatures

to get quality prints while protecting your lungs.

We generally get two types of customers:

Those interested mostly in air quality.

Those interested mostly in print quality.

Think Airﬂow, Not Fishtank

The problem is those two goals use two diﬀerent techniques in terms of airﬂow. For

the best air quality, we use the same design as industrial equipment, which uses

airﬂow to manage air quality. Because of physics, the amount of air moving into the

enclosure has to be equal to the air moving out of the enclosure. When the air moves

out of the enclosure carrying volatile organic compounds it can then be vented to the

outside or run through an air ﬁlter.

People often ask us if the enclosures are airtight and have a bottom. If your main

concern is air quality then being airtight doesn't buy you anything since the particles

will just ﬂoat out when you open the door. It's only by maintaining a negative air

pressure that the particles are reliably kept away from human operators, which means

having openings for air to both enter and exit the enclosure.

If the maximum internal temperature is the goal, then being airtight also doesn't help

since the main cause of heat loss is through conduction through the sides of the

enclosure, not through small amounts of air loss. A bottom doesn't help either since

while heat doesn't rise, hot air does, and thus almost all of the heat of an enclosure is

at the top. A bottom is helpful, however, if your table is too small for the enclosure.