temperature problem

[3skyD]

Hello everybody, i am asking help here because after research i didnt find a fix to my problem.

When i start the printer i can read room temperature for the bed at 22 and for the nozzle at 20.
When i want to print both reach the target temperature on the screen.
I dont have thermometer so i cannot give precise numbers.
Bed temperature seems about right but nozzle temperature seems to be a good 50 bellow(at least) the one displayed.
When set at 250, it barely melts pla.
Would id be the thermistor ?
What are the solutions ?

Thanks

[William]

Hi, have you tried to heat the nozzle to 200 ° to manually push the consumables to see if it is silk? Have you measured the thermistor resistance?

[3skyD]

I do not have multimeter so cannot post thermistor resistence.
I undo all the hot end and i noticed two things :
- Thermistor could be pushed in one more milimeter ish
- The heater block was not really tight

Now it seems that the temperatures displayed are about right.

I can print PLA fine and result is really good however when i increase the temperature to print PETG, after few minutes of printing the extruder motor starts clicking and cannot push anymore fillament. The Barrel Throat/Heat Break is full of plastic. like if the fillament was melting in the wrong pace. The fan is running well on the hot end.

I would like to upgrade the hot end with something more reliable/heat resistant as i want to mainly print PETG/ABS and PLA for prototyping only.

Which hot end is compatible for the a10 and would be good ?
I also ordered that : https://www.amazon.co.uk/Extruder-Alumi ... ial&sr=1-1 to try to improve extrusion.

Than you very much for your help, i am new to 3d printing and really appreciate that.

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[Duckdodgers]

Hi All,

I am having exactly the same problem. After suffering under extrusion I narrowed wit down to nozzle the temperature being lower than its stetting/reading. I have used a IR thermometer to measure the temperature of the head/nozzle from a range of 50 to 250 degrees C. The profile printer reported vs manually measured temperature is linear (which is good), with the manually measured temperature being consistently 94% of that reported by the printer.

This was a sudden change in performance, I have had the printer for about a month, only last week did the under extrusion start. I will check to see of the thermister is loose.

In the mean time can any of the G10 collective tell me what Thermister is used? I have tried google, but cant seem to get a answer. This is so I can manually measure the resistance vs temperature and compare to the data sheet and if needed order a spare.

Kind regards,

Duck.

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