I am facing problem regarding my MK2 PCB heater. I am using an old thermistor with it as this heater has no thermistor attached. The thermistor model I am using is SD3. I have The present thermistor is of type 6.
One thing I have forgotten to state. This is a replaced heater.
I am giving you the approximate temperature. the bed becomes hot only at the temperature 60°C. but while using the older one the bed remained okay at 95°C. While printing, I fixed the temperature for the new one at 45°C and continued for 3 hours at a stretch.There, I had no problem.
Now I am using maximum temperature 50°. Can you please tell me whether I have made any problem while I used the new thermistor?
For your convenience, I am giving you more specification here.
The PCB I am using is setup on the top of a copper platform which has VHB tape. This gives around 1mm value value of authorisation between the PCB and the platform. This has a hole in the center by which the thermistor enters the middle through that the thermistor enters and then it enters into the PCB hole where there is a glass sheet. ID did not permanently attach or epoxy PCB heater to the the thermistor, it is only in the hole.
Across the Thermistor, I am thinking of applying some thermal compound such as CPUs in order to pack the PCB hole .
Do you have idea please???