Advice required  

RE: Advice required

Search blob of doom you may need to heat from outside then carefully pull of being very careful with wires 

You have a blob-of-doom.

If you are using firmware 3.12 or later then the following may not work but if you have not upgraded this year it should be OK.

Search for blob of doom to see how others have dealt with them.

Before doing anything, look at pictures of a clean extruder and note the position of the rather delicate wires that are currently hidden, if you damage them you will have to buy replacement parts as broken wires can't be rejoined.

You have probably damaged your fan shroud and will need a replacement.

To remove it:

Raise the nozzle temperature to the printing temperature for the filament in question and allow it to heat for several minutes.

If you are lucky you will be able to prise the blob open - more likely you will need to add heat from outside with a heat gun to aid the softening, sometimes it's worth using a soldering iron to carve chunks off the mass.

Use needle nosed pliers to prise this away; remove it in parts if it won't release the wires.

Once you have the worst removed you decide whether you need to disassemble the extruder to get at all the blob or perhaps you can clean up in situ.

After the cleanup there will be overcooked filament inside the nozzle so at least a purge and probably a cold-pull will be necessary.

* * *

The latest firmware is supposed to reduce the chance of these blobs growing out of hand but as a side effect they make cleaning up more difficult.  So if you have upgraded and your attempts result in a thermal anomaly then come back, there are a couple of things we might try.

Cheerio,

RE: Advice required

Oh yes course forgot about thermal anomaly