Hi all would someone please explain to me what the setting below is for, I see it is only on Studio setting for filaments on the A1 printer option.
HRC is the hardness of the nozzle. If you hover over it, does it explain itself?
Same one as you very strange
I just noticed I am not in Advanced mode and not able to switch it on, not sure if that is why mine shows the HRC setting???
I’ve turned Advanced on & off, I thought the same.
You probably have “Developer mode” checked in Preferences (down arrow to the right of File).
Developer mode locks the advanced sliders and apparently activates the HRC setting. I don’t know if there are other differences.
I don’t think this is currently useful since I cannot find any hardness ratings for Bambu nozzles.
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Yes I have Developer mode on, with it off and in advanced mode the HRC setting is now missing. I would still like to know what HRC does. The little info I get on HRC appears to have something to do with a stainless or hardened nozzle.
There are several Rockwell scales used to measure hardness of materials. The most common scales are B and C. C hardness scale(HRC) is used for hard materials such as Hardened steel, iron, titanium, etc., while the B scale(HRB) is used for softer metals such as aluminum or brass.
I’m unable to find the specifications for Bambu nozzles though. The default value on my X1C is 3.0 which would allow the use of a very soft nozzle.The hardness value of a nozzle would be good information to have, because if we knew the hardened steel nozzle value, we could use that value when setting up abrasive filaments such as those containing carbon fiber.
Hello. This is an old topic, but I found it while researching and wanted to share it.
What is HRC?
HRC stands for Rockwell Hardness Scale C, a standard used to measure the hardness of metal materials.
| Nozzle Type | HRC Rating |
|---|---|
| Brass Nozzle | HRC 20-25 |
| Hardened Steel Nozzle | HRC 60+ |
| Ruby Tip or Tungsten Nozzle | HRC 70+ |
What Does Required HRC Nozzle = 3 Mean?
This value indicates the minimum nozzle hardness required based on the abrasiveness of the filament material.
In OrcaSlicer, the classification is as follows:
| Value | Required Nozzle Type | Description |
|---|---|---|
| 0 | Brass Nozzle | Standard filaments (PLA, PETG) |
| 1 | Coated Nozzle | Light abrasive filaments (Wood-filled PLA, Glow-in-the-Dark) |
| 2 | Hardened Steel Nozzle | Carbon fiber, metal-filled filaments |
| 3 | Hardened Steel (HRC 60+) | Highly abrasive filaments (CF-PLA, CF-PETG, TPU-CF, Metal-filled filaments) |
| 4 | Ruby/Tungsten Nozzle | Industrial abrasives (PEEK, Ultem, PA-CF) |
How Does It Affect Your Setup?
If Required HRC Nozzle = 3 is specified in the filament profile:
- Brass Nozzles will wear out quickly and degrade print quality.
- Hardened Steel Nozzles (HRC 60+) are necessary for long-lasting performance.
- OrcaSlicer will automatically warn the user if an incompatible nozzle is selected.
Compatibility with Your Machines
|Machine|Standard Nozzle|HRC Compatibility|
|Creality K1 Max|Brass Nozzle (0.4mm)|Suitable for HRC 0-1, Abrasive for HRC 2-3|
|Bambu A1 Combo|Hardened Steel (0.4mm)|Suitable for HRC 3|
Conclusion
- Bambu A1 Combo is already equipped with a hardened steel nozzle, making it compatible with HRC 3 filaments.
- For Creality K1 Max, upgrading to a hardened steel nozzle is highly recommended when using abrasive materials.
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I wonder if it triggers the abrasive filament warning popup if set above a certain number. Based on nozzle selected on the printer(hardened or not). If not, it should.
500 is max limit on the slicer. Bu ti don’t get it 500 is for Vibranium, adamantium or what?
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