Spastic hotend temps

[jimc]

having spares of anything hot end related is always a good idea. i keep spare complete hot ends, spare heaters, thermistors, nozzles, molex connectors. everything i need to rebuild the the extruder end of the machine. even though everything last a long time i consider the hot end stuff as consumable. its all just part of the fun i guess and the only thing that kills the fin for me is not having something on hand when i need it. drives me nuts.

[therenegademaster]

Ok, this may be a stupid question, but.. Is the thermistor part of the hotend? Are you talking about buying a new hotend, part of the hotend, or some other part?

I have to agree that MakerGear support, and the community, are awesome. I print quite a lot and my printer has been pretty solid, but it's nice to know I can easily replace a part if I need to.

[jimc]

the thermistor slides into the heater block on the hotend.

[Vprints]

What jimc said.

There are two sets of wires (on mine, the insulating sleeves make it actually look like one set of two red ones, and a single black one) feeding into the side of the V3b hotend. The two red ones (top) handle actually heating the hot end; the black ones (bottom) are to the thermistor, which easily slides right out of the hot end; the business end looks like a little ~1-inch metal rod.

[On the positive side, I've learned a bit more specifics about how the M2 is built this week... ]

[willnewton]

I have just placed an order for 2 new thermistors from makergear. One to fix it now and one to fix it later!

I also had thermistor issues, but was easy to diagnose. Jiggling the thermistor wire near the heater block while heating the extruder caused it to alternate between the actual temp and O degrees.

I'll post my results in a few days when the chocolate arrives.

[willnewton]

So my thermistors arrived. My old thermistor's housing had come off at the hotend side. I see the the new ones have a small crimp around them now, so maybe that will help.

Took about 10 seconds to pop the new one on. I also took the time to reset my bed level and lube the Z-leadscrew.

Back to printing!