Removing thermister cartridge from hotend
Hi folks,
I had a print failure and aside from all the filament blobs stuck to the hotend, one of the thermister wires broke. I removed most of the filament blobs, but I am unable to remove the thermister cartridge to replace it. I removed the grub screw underneath the thermister, but I think that some blobs may yet be holding it in. There is a hole on the opposite side side of hotend from the thermister wires. I tried pushing from there with a nail punch, but I'm not sure whether that goes all the way through to the thermister.
Before I disassemble the hotend and use a heat gun, any advice on how to remove the broken thermister?
Thanks!
Phil
Re: Removing thermister cartridge from hotend
That hole does go all the way through. Do all this at temperature (CAREFULLY) so the plastic is soft - or use a heat gun to soften the plastic.
https://e3d-online.com/v6-sensor-cartridge-heater-block
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Re: Removing thermister cartridge from hotend
Thanks. Yeah, the extruder must be disassembled before blasting it with a heat gun. For anyone else pondering whether it can be removed without disassembling the extruder, it's a definitive NO. Don't even try. It's held in very firmly by melted filament and no amount of whacking it with a nail punch will free it without damaging the hotend. Similarly, blasting the extruder with a heat gun will melt other parts around it.