TLDR: Snapmaker, you need to look into your QA for the amount of thermal paste you put in the heatsink!
I recently got a new PLA+ filament that runs hotter than normal PLA. The filament would not stop oozing out of the nozzle even with retraction, lower temps, wipes, etc.
After trying everything I came across this video (https://youtu.be/AflwqtVNBlQ) where the guy opens up the heatsink and shows that there is next to no thermal paste where there should be, so adds his own. I just checked and he’s right – I also had less than a smear on mine (see pic)!
Snapmaker team, could you please look into your QA regarding this issue? This is probably a major contributing factor for the amount of heat creep issues that so many people have faced.
From the photo you provided, it does seem that the application is incomplete.
I have also informed QA and the production department has indicated that they will enhance inspection during the application of thermal grease in the future, with particular attention to this issue.
If you need a replacement, please contact support, hope this could help.
I had the same problem with Sunlu PLA+ running on their recommended temperature.
A temp tower then showed that it works best with the same temperature for PLA.
What brand are you using?
Looks like Sunlu in general doesn’t like the snapmaker devices. I also have issues with their META PLA which doesn’t stick to the bed or causes warping.
With filaments from other brands i never had an issue so far.
Did you try it with a bit lower temp?
Beside that i am using PETG with 250°C and do not have an oozing issue. Not with the 0.4 nozzles and not with the 0.6
Not that I’ve seen for the PLA+ stringing, though I’ve only been able to run a few calibration tests. I am starting to print a Mandalorian helmet tonight which will run for nearly two days so I will see how it goes. Unfortunately I haven’t done a large print prior to the comparison so there’s no way to compare before and after results sorry.
Based on how dry it is, they might have used boron nitride thermal paste which sets dry. Either way, there does not appear to be a consistent coating which would not help heat transfer from the heat brake on the cold side to the heatsink. I saw complaints about the right nozzle getting heat creep but that may have changed after the door fix and the additional plug thingo last year.
