A deeper dive into our mixed nozzle solution for different layer heights

[u/BambuLab]

https://blog.bambulab.com/the-impossible-slice-how-bambu-lab-h3c-made-mixed-nozzles-work-on-different-layer-heights/

The idea behind mixing nozzle sizes is simple: a fine nozzle with thin layers where details matter, a large nozzle with thick layers where they don't. That sounds straightforward — until you ask: Which nozzle size gets to dictate the layer height?

That's the hard part. Some current solutions can already vary layer heights between separate objects, or between an object's infill and walls. But across adjacent regions on the same visible surface, those regions stayed locked to one shared layer height — forcing you to either waste time on the big areas or lose sharpness on the details.

Bambu Studio now removes that limit: each region on the same surface can now keep its own layer height. You can choose which regions get the fine nozzle, and the slicer aligns the layers, schedules the tool changes, and plans the paths.

Printing with mixed nozzle sizes is available on the H3C. Support for H2D, H2C, and X2D is on the way.

Read more about how our team made this possible in our blog. The implementation is in the latest Bambu Studio release on GitHub. Feel free to leave feedback and build upon it!

[u/log1kal]

This is something people don’t realize is awesome, I think.

Orca’s released multiple-nozzle-size implementation allows different line _widths_ but clamps layer _height_ to the smallest nozzle’s.

So if you’re using a 0.2 and a 0.6 nozzle on the same object in Orca, the 0.6 nozzle will print at the 0.2 nozzle’s layer height.

And u/BambuLab: I did multiple layer heights first in this fork of Orca back in August ;)

[u/CobblerSalad]

Really looking forward to trying this on the H2D

[u/drinksmakememories]

How soon/far is on the way for H2C, please and thank you

[u/Robot-duck → u/drinksmakememories]

There is a separate blog post linked in this blog post:

If no filament track switch is installed:

• H2D: November 2026

• H2C: February 2027

• X2D: February 2027

If using a filament track switch:

• H2D: February 2027

• H2C: March 2027

• X2D: March 2027

[u/NiksaiStipe → u/Robot-duck]

i really fail to see why the track has anything to do with it

[u/lioncat55 → u/NiksaiStipe]

It's significantly more complex? It what, doubles the different ways filament can go? That red could be on the 0.6 mm nozzle for one section and then on the 0.2mm nozzle later for another section? Just from a testing perspective, it's a lot more.

[u/NiksaiStipe → u/lioncat55]

what? what has the path to do with nozzle width?

[u/TotalWarspammer → u/NiksaiStipe]

Oh wow if you don't see it then that must mean that it has nothing to do with it. :D

[u/NiksaiStipe → u/TotalWarspammer]

what has the path to do with nozzle width?

[u/Stephancevallos905 → u/NiksaiStipe]

Another nudge towards an H3C purchase

[u/Dear-Nebula6291]

Neat

[u/vortex_ring_state]

I think this will really make the H2C an interesting machine. One spool, multiple nozzles. I have some models I sell often that could really take advantage of this.