Bed heat error and consideration about bed temp (mk2.5s) with carbon fiber
Hello everyone,
lately I am printing a lot of things using nylon with carbon fiber. I am feeling very good using bed temperatures between 90 and 100 degrees and glue stick applied on the PEI (I also tried bringing it to 115 degrees but the adhesion is not as effective).
However, I would like to inform you of an error found by printing Michael Fanta's leverage nutcracker in this weekly.
The gcode available are for MK3 but MK2.5S has everything you need to start them. The only precaution to follow is for the layers following the first and set on the gcode at 110 degrees of bed temperature. This value cannot keep it constantly by my machine, oscillating between 103 and 105 degrees (probably also because cold in house :)) and this results in the error after about 5 minutes of starting the print.
First of all I want to clarify that it is absolutely not necessary to keep 110 degrees of the bed (I finished the prints using 90 degrees and with glue stick with far higher seals) and I also wonder if the thermistor of the MK2.5S (old of the MK2S) has limitations compared to MK3.
Anyone have any more information about it?
Thanks
FB
RE: Bed heat error and consideration about bed temp (mk2.5s) with carbon fiber
It is possible that the original power supply is not able to maintain the bed temperature, especially if the room is cold.
Cheers,Dave Jackson"Enthralled Nooby (not so much maybe, ~58 years old)... If 3d printers had been around 40 years ago... "
RE: Bed heat error and consideration about bed temp (mk2.5s) with carbon fiber
@david-j21
mmm... effectively could be a cause
RE: Bed heat error and consideration about bed temp (mk2.5s) with carbon fiber
The issue is not the termistor but the heating can not cope with that high power to heat the bed. Sometimes in 2.5 you could also encounter the thermal runaway on the nozzl during printing from PLA when after the first layer the fans start on the full throtle.
2.5 runs on 12 V, mk3 on 24 V
even an old man can learn new things 🙂
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RE: Bed heat error and consideration about bed temp (mk2.5s) with carbon fiber
ah ok, all clear now