It's one of the best hacks I ever done. I hadn't figured out how to stabilize the temperature within five degrees. Five degrees usually creates different zones. I use E3D V6 Hotend.

Long story to short the exposed lead of thermistor was rubbing heater block on and off, which triggered temperature errors while in printing.

I compared resistance of the thermistor with unused one. The measurement was good. I insulated the leads of thermistor using JB Weld stuff. And then pasted plaster and wet fiber over the heater block, let it curing one night.

What the plaster insulation changed was to stabilize hotend temperature within one degree for the whole printing session.


A sample print


Edited 1 time(s). Last edit at 03/14/2016 09:53PM by janpenguin.

Insulating the block isn't a bad idea, but it should not be entirely necessary. If you're using PID to control the temperature (you should), you should not see more than +/-1 C variation. If you are using PID and you see more temperature variation than +/-1 C, rerun the PID autotune routine and make the changes to the parameters in the firmware.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]