I am the owner of a pretty Anycubic Mega I3 and it was very cool to own it.

However, now I have several problems when printing with it. It clicks all along, at high or low temperature, at 5 mm above the plate, and the result is very disgusting. It is the same with the basic black PLA, or with other PLA from ICE-Filaments but I can't do anything.

I use Cura and I've reset it several times, using the defaults options or not.

Here are two examples of some prints (normal cube):

example 1

First example of poorly printed cube

and Example 2

Second example of poorly printed cube

  • $\begingroup$ Clogged hot-end or too low temperature will cause this. $\endgroup$
    – esoterik
    Jun 18 '18 at 20:58

I had a similar issue after installing an E3D V6 using a Bowden extruder.

PLA needs a heat break that has a PTFE liner, since with all metal heat breaks, it's probable that the filament will reach glass transition temperature in the heat break and stop flowing properly.

Also, I had filament that was 1.86 mm instead of 1.75 mm, which caused it to bind inside the PTFE tube.

Before correcting these issues, I was able to temporarily fix the issue by doing a cold pull to unclog the extruder, and was able to print around 10 cm in height of a 20x20x20 mm cube.

To do a cold pull, heat your extruder between 80-100°C, and then pull out the filament. If successful, the tip of the filament will be shaped as the inside of the nozzle. If needed, heat the extruder to 200°C and manually push the filament to fill up the nozzle and heat brake, then let it cool down to the above temps and do the pull.


The "click of death" is the feed bolt skipping as it chews a bite out of your filament. Your filament feed is encountering resistance and the feed bolt is slipping. I've seen that sad spaghetti so many times. After unclogging your head with a cold pull and cutting off the mangled filament, you'll have some things to try:

I had a Lulzbot with the older Bowden extruder and learned to prevent spaghetti air prints by: 1) replacing PTFE liners periodically, and 2) increasing temperature for certain colors. My black PLA required +5C over my natural PLA, which was a total surprise.

Now I have a new Lultzbot with the metal extruder and life is good. All metal hot-ends are so much nicer.


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