Nozzle And Heat Break Tube Mount Into Heat Block

This is a common situation when there is a leakage of plastic in the heat block.

Remember, the nozzle MUST always have a gap between the heat block and the nozzle. The tightness is done between the nozzle and the heat break tube, not between the nozzle and the heat block! Never hold the heat break tube to tighten it. It will be tighten when the nozzle will be in contact with it, so tighten the nozzle as mentioned here under.

Yes, M6 thread is a step of 1mm per turn, this is why unscrewing it half turn will leave a 0.5mm gap.
Heat Break Tube is thin, only hand tight it! Its when tightening up the nozzle that the heat break tube will get tight. Don’t forget the 2 aluminium plates..
Once tight, you can mount the hot end onto the single extruder. Make sure it is perpendicular.
Tight up the screws holding the aluminium plates squeezed between the single extruder lateral plates.
Adjust the position of the heat block to make it parallel to the X axis.
Yes, this means that the nozzle is in contact and tight with the heat break tube what we need !
The heat break tube will likely unscrew , what we do not want.

All this shown, it should avoid you having plastic leakage in the heat block.

One more thing, to ensure the tightness of the nozzle, add a keystroke again when the heat block is at 200°C.

Hold both Heat Block and Nozzle, once done, check that this famous gap (it can be a little less than 0.5mm) is still there between the nozzle and the heat block.

Enjoy your prints.

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