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Brown paste on extruder.

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Posted · Brown paste on extruder.

Hello all,

Just recently bought a UM2 and so far I am really happy with its capabilities.

I've noticed a brown paste around the nozzle+heater block area as can be seen below.

Is this anything for concern or just some type of thermal grease?

Thanks in advance.

(Excuse the poor picture quality).

NXeiFOx.jpg?1

 

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Posted · Brown paste on extruder.

It's copper grease that is used as a lubricant at the junction of the steel nut and aluminum plate, to prevent corrosion and ensure that the nut can be turned easily.

(And btw, technically, that's not usually called the extruder. It's the printhead or hot end. The extruder is really the black plastic filament drive part on the back of the printer - although to avoid confusion I tend to refer to that as the 'feeder assembly' these days.)

 

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