I ended up with a nozzle completely covered in resin much like this:
https://wiki.creality.com/en/k1-flagship-series/k1-series-general-documents/nozzle-leakage-treatment-guide
What causes this and how do I avoid it occurring again, cost me about $100 to repair?
How does the K1C do that with the unicorn nozzle? What is the K1C MAX, I wasn’t aware such a model existed?
YOU NEED TO CHECK YOUR NOZZLE AND COOLING BLOCK ADAPTOR THEY GET LOOSE SO ITS GOOD TO CHECK WEEKLY AND DO IT AT OPERATING TEMPS
As @John_Will said it makes a difference in what model printer you have. If it’s an older style K1 or K1 Max then the hot end is different from the newer ones.
If you do have the older style then your have to make sure the nozzle is installed correctly. It involves heating the nozzle first and two wrenches to take the nozzle out. If it’s not done correctly than the filament could leak out from pressure where the nozzle meets the hot end. The newer unicorn nozzles solve that problem by being just one piece instead of two eliminating the possibility of a leak between the two parts…
I have a 2024 K1 Max which comes with the unicorn hotend.
@John_Will my apologies it’s the K1 Max I have.
Now I’m wondering how that Unicorn nozzle would leak like that… 
I also wonder how the unicorn nozzle could do that unless it’s damaged. That sure seems to be leakage in the middle of hotend, I don’t see how that can happen unless the nozzle is damaged.