Why does the 3D printer heat up? Wouldn’t the print melt? Shouldn’t it instead cool down so the print would freeze?
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It needs to get hot enough to melt the filament through a nozzle which lays it in place. The ambient air temperature is cool enough for it to solidify. The bed heats up so the freshly extruded filament can stick to it, but not nearly hot enough for it to melt.
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