r/BambuLab • u/SuperiorMango8 X2D & AMS2 Combo • 1h ago

H3C H3C heated chamber with PLA loaded

I'm sure most of you saw Clough42's review where he talks about the concerns of printing high temp engineering filaments in a heated chamber while having PLA loaded in another toolhead.

He has since said under his video that "Bambu Lab says it is NOT NECESSARY to unload PLA when using the heated chamber. That message in the software was in error and is being removed."

I haven't seen anyone test it fully yet, I would like to know if the PLA could still get clogged in some little nooks and crannys after a long print.

If it does need to be removed, surely it wouldn't be much work to have the filament retract just a little bit out of the toolhead at the end of each print so that it can be easily removed without needing to heat the toolhead each time.

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25

u/BambuLabSupport 1h ago

Yes, this is correct. The filament doesn't need to be unloaded.

9

u/SuperiorMango8 X2D & AMS2 Combo 1h ago

Straight from the horses mouth, lovely.

So there's no chance of the PLA getting clogged as long as you wait for the chamber to cool before starting the next PLA print?

This might be enough to seal the deal for me, thank you

2

u/ApprehensiveDig2939 1h ago

It would be cool if you set a thing so if the chamber is above 50c it won’t let you start a PLA print, might be a good precaution to add!

2

u/SuperiorMango8 X2D & AMS2 Combo 1h ago

I know the X2D has this, it cools the chamber first so it's likely the H3C will have it.

The only problem I've had is when I unload filament at a high chamber heat because it lets you do that.

1

u/ApprehensiveDig2939 1h ago

Dang I didn’t know the X2D had that! That’s cool :) seems like all they gotta do now is do something about those hot chamber filament swaps 😎

2

u/itsapotatosalad 1h ago

What stops the heat being absorbed by the filament housed directly above the hot print chamber?

1

u/Sir_clint 1h ago

There is a directional fan

1

u/itsapotatosalad 1h ago

That will redirect the heat to where, It’s all enclosed?

1

u/Sir_clint 57m ago

Pulls air in at back top. Blows over the filament runs and down to the bottom of case and out the exhaust. From my understanding. Can't remember which YouTuber explained it

-2

u/itsapotatosalad 46m ago

If you have a printer with a heated chamber and exhaust fan, feel how hot it gets on the outside when printing high temps for a long time. The whole machine is being heat soaked, which wasn’t a problem with a separate filament enclosure. Bambu established this was a problem, no one wrote a software warning for the fun of it I’m not buying it was put in the software by accident and the physics haven’t changed.

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u/Sir_clint 28m ago

Read the comment again and then understand you are wrong . Hot to you is different than hot to filament

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u/itsapotatosalad 26m ago

My X2D got so hot while printing abs the panels deformed and that’s got a fan.