Thermal anomaly at nozzle change
Changed the nozzle for the first time after updating to 3.12.2 and got an thermal anomaly when I applied my clamps to hold the hothead.
Seems like the extra metal cools the hothead to fast.
There was no problem doing the actual exchange, I did it with the unit on and the nozzle set to 285C.
Anyone else had a similiar problem?
/Alx
RE: Thermal anomaly at nozzle change
There's a new option for nozzle change in the printer menu that disables the temp check. Not at home right now so can't give you the specific path. Probably under Hardware settings.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: Thermal anomaly at nozzle change
Thanks fuchsr,
Used nozzle change function yesterday and it took a lot out the anxiety with doing the change.
Have anyone seen a official video about this function?
RE: Thermal anomaly at nozzle change
Glad to see that new function, but I anticipate a related problem -- Prusa shows 285C as a recommended starting point for printing nylon. How is one supposed to deal with that? I just ran into the change nozzle problem (didn't see the new menu item) and am trying to print using MatterHackers nylon; they recommend 265C so that will probably work for now, but how is one supposed to deal with the higher temps when needed?
RE: Thermal anomaly at nozzle change
A bit annoyed with the whole nozzle changing thing on the mk3s, especially the 0.25. Worked fine the first time but after going to 0.8 and then back the prints just messes up with spluttering. A new hot end can help but I think I rather update to 3.9 instead.
RE: Thermal anomaly at nozzle change
... after going to 0.8 and then back the prints just messes up with spluttering.
The spluttering seems like it would be wet filament, no? I had a lot of spluttering at first with an unopened/new roll of filament, but it was over a year old. Dried it out and no more spluttering. Switching between 0.25 and 0.6 with no problems, printing @ 265C
RE: Thermal anomaly at nozzle change
What plastic, Petg?
RE: Thermal anomaly at nozzle change
Sorry, got a bit mixed up from another thread; I was thinking about a more hygroscopic filament material like nylon. I'm in a dry climate so things like PETG don't seem to be a problem in that regard.
RE: Thermal anomaly at nozzle change
I wouldn’t say it’s really spluttering, it’s more that the heat escapes up so the filament stops coming out of the nozzle. I first noticed it from when the feeding drive starts clicking.
if I pause for a while the temperature gets balanced again and I can continue, very annoying…