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Thermal paste  

New Member
Thermal paste

Hello does thermal paste just cool the heater quicker or its needed?

I was cleanening the heater and acidentaly removed a lot of paste with it.

Or like will it survive when i will use it without the paste for like a week?

Posted : 19/09/2021 4:09 pm
Honorable Member

Yes, thermal paste is necessary to better/faster transfer heat from heatbreak to cooler. Without it, temperature in upper part of heatbreak (coldend) will be too high and you can expect clogs & jams. Because of higher temperatures in coldend, PTFE tube inside will shrink quite fast -especially if you use stock heatbreak.
That is, if you use it without thermal paste, you won't damage printer.. but after a while (one hour, two hours?) it just won't work as expected and you'll be forced to clean the mess inside heatbreak -at least that's my prediction.

Btw. If you only print PLA, then thermal paste for CPU cooling will do the job at least temporary (is much better than nothing).

[Mini+] [MK3S+BEAR]...
Posted : 19/09/2021 4:55 pm
Eminent Member
Noctua Thermal Paste

I use NOCTUA thermal paste for my PC's (Both video cards and CPU's.)  It's good for 110 degrees C.  IF you have a proper heat break in your mini, even the stock one is fine, it should work.  There is a video on youtube where someone measured it with a Bondtech, stock and a clone and the bondtech and the original were much lower than 110C.  I can't remember what the clone got to, it was higher though.  IF you have to order anyway, just get some copper based stuff that's good for 3D printers.

Posted : 21/09/2021 11:26 am