Is there a limit for the tool head temperature especailly for enclosed printers ?
Reason: I have enclosed my SV08 on my own without any fan at the outside.
Due to fumes of ASA/ABS I want to clean them inside of the enclosure which has the benefit that the hot temperature does not leave the enclosure and the heat up is faster.
Now I detected, that the “tool head” temperature is rising and rising from 60 to 65°C and still rising- then I opened the front door so that the temperature constantly kept 65°.
But I believe that it is not good to have a constant tool head temperature of 70 or maybe more degrees Celsius - even in case I want to have the enclosure fully closed.
Question: is there a maximum operation limit for the tool head temperature from manufacturer side ?
From the standpoint of the toolhead MCU board the hotter it is the shorter it’s lifespan. I wouldn’t hesitate to run it at 100 °C. Note the temperature sensor is INSIDE the MCU and will always be 10-15 degrees hotter than the chamber temperature.
From the standpoint of the extruder motor again life is a function of temperature. Also the torque output decreases as temperatures rise.
For most people the factor that limits chamber temperature is “heat creep” to the cold half of the heat break resulting in sticking and clogs. The extruder heat sink is cooled by air that is drawn from inside chamber.
Also at some point overhangs and bridges won’t cool quickly enough and print quality suffers.
SO the main question is how often are YOU willing to spend $77 to replace your toolhead AND how hot can you run and get good prints.