Black ooze coming from nozzle

Hi! I was printing a small model yesterday and when it finished I noticed some weird black stuff was attached to it. Here´s a picture of it, it was just that drop. Any ideas about what it might be?
Thanks!

 

Is your nozzle leaking out the top? You should tighten it down with the supplied 4.5mm wrench on the cut in marks on the heat break. Then use a 7mm or adjustable wrench on the nozzle. Do it at 280C or so.

 

My printer has a J-head nozzle (and no 4.5 mm wrench) so I have nothing to tighten

 

Use needle nose pliers, I do!

Make sure you heat it to 190-200 then turn it. Turns real easy when hot.

If your head is too close to the bed it will cause it to move. I also notice that Over time it does move. Watch it and move it according when hot, it's impossible to move when cold.

And when it's hot, use a thick rag and wipe the head removing any leaked filament from the head. You should be good to go.


Sent from my iPhone using Tapatalk in Canada

 

Is it leaking out the top?