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EFC Density entry (#230)

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Ian Bassi
2026-05-04 12:37:24 -03:00
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print_settings/quality/quality_settings_precision.md
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@@ -9,6 +9,7 @@ This section covers the settings that affect the precision of your prints. These
- [X-Y hole compensation](#x-y-hole-compensation)
- [X-Y contour compensation](#x-y-contour-compensation)
- [Elephant foot compensation](#elephant-foot-compensation)
- [Elephant Foot Compensation Density](#elephant-foot-compensation-density)
- [Precise wall](#precise-wall)
- [Technical explanation](#technical-explanation)
- [Precise Z Height](#precise-z-height)
@@ -107,11 +108,11 @@ To mitigate this effect, OrcaSlicer allows you to specify a negative distance th
![elephant-foot-compensation](https://github.com/OrcaSlicer/OrcaSlicer_WIKI/blob/main/images/Precision/elephant-foot-compensation.png?raw=true)
The compensation works as follows:
When the `current_layer` is <= `input_compensation_layers`
When $\mathrm{current\_layer} \le \mathrm{input\_compensation\_layers}$
```c++
compensation = input_compensation_distance - (input_compensation_distance / input_compensation_layers) × (current_layer - 1)
```
$$
\mathrm{compensation} = \mathrm{input\_compensation\_distance} - \frac{\mathrm{input\_compensation\_distance}}{\mathrm{input\_compensation\_layers}} \times (\mathrm{current\_layer} - 1)
$$
According to the equation, we can establish the following rules:
@@ -141,6 +142,43 @@ Assuming the compensation value is 0.25 mm:
> That's why the Brim may look disconnected from the object when this feature is enabled. But in the final print, the brim will be correctly attached to the object.
> If you use a high value for the Elephant Foot Compensation Distance, you may want to enable the [Brim use EFC outline](others_settings_brim#brim-use-efc-outline) option to ensure proper brim attachment.
### Elephant Foot Compensation Density
[Mode](option_mode): `Expert`.
[Variable](built_in_placeholders_variables): `elefant_foot_layers_density`.
Controls the [internal solid infill](strength_settings_infill#internal-solid-infill) density used on Elephant Foot Compensation layers above the bottom layer.
This helps reduce excess material buildup and ripple/nozzle-scrape artifacts on early solid layers when first-layer squish is high.
- Range: `50%` to `100%`
- Default: `100%` (feature disabled)
This option works together with [Elephant foot compensation layers](#elephant-foot-compensation).
For each compensated layer above the bottom layer, OrcaSlicer applies:
$$
\mathrm{effective\_density} = \mathrm{base\_density} \times \frac{N - (k - 1)}{N}
$$
Where:
- `base_density` is `elefant_foot_layers_density`
- `N` is `elefant_foot_compensation_layers`
- `k` is the compensated layer index (`1` = first layer above the bottom layer)
Example with `base_density = 80%` and `N = 4`:
- 1st compensated layer: `80%`
- 2nd compensated layer: `60%`
- 3rd compensated layer: `40%`
- 4th compensated layer: `20%`
- Higher layers: normal internal solid infill density (`100%`)
> [!NOTE]
> This only affects internal solid infill inside the compensation zone.
> It does not change sparse infill, top surfaces, or the bottommost layer.
> Start with `80-90%` and `1-2` compensation layers, then tune based on visible ripples or nozzle scraping on lower solid layers.
## Precise wall
[Variable](built_in_placeholders_variables): `precise_outer_wall`.