LyCORIS Chopping
LoRAs can sometimes include unwanted elements or behaviors during training. “Chopping” allows you to selectively enable or disable different parts of a LoRA model to fine-tune its effects. This can help control style transfer, character consistency, and other attributes.
Quick Solution: Block Weighting
You can use block weighting tools during generation:
- ComfyUI Inspire Pack - Includes LoRA block weight functionality
- A1111 LoRA Block Weight
Permanent Solution: Chopping
For a permanent solution, you can use chop_blocks.py by Gaeros to modify the LoRA file itself:
git clone https://github.com/elias-gaeros/resize_lora
cd resize_lora
How to Use
python chop_blocks.py --model input.safetensors --save_to output.safetensors --vector "1,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1"
Understanding Vector Strings
Vector strings control which layers are kept or removed using values from 0 to 1:
- 1.0 = Keep layer completely
- 0.0 = Remove layer completely
- Values between = Partial effect
Layer Mapping
| Position | Layers | Description | Common Usage |
|---|---|---|---|
| 1 | Global | Overall LoRA strength | Usually keep at 1 |
| 2-7 | Down | Initial feature extraction | Style, composition |
| 8-9 | Mid | Core processing | Poses, layouts |
| 10-21 | Out | Detail reconstruction | Character details |
Common Presets
| Preset Name | Vector |
|---|---|
| Character Focus | 1,0,0,0,0,0,0,1,1,0,0,0,1,1,1,1,1,1,0,0,0 |
| hamgas | 1,0,0,0,0,0,0,1,1,0,0,0,1,0,1,1,1,1,0,0,0 |
| kenket | 1,1,1,1,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 |
| serpent_x | 1,0,0,0,0,1,0,1,1,0,0,0,1,1,1,1,1,1,0,0,0 |
| BEEG LAYERS | 1,0,0,0,1,1,0,1,1,0,1,0,1,1,1,0,0,0,0,0,0 |
| All The Layers | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1 |
| All-In | 1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0 |
| All-Mid | 1,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0 |
| All-Out (Wolf-Link) | 1,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1 |
| Style Transfer | 1,0,0,0,0,0,0,0,1,0,0,0,1,1,1,0,0,0,0,0,0 |
| Ringdingding (Stoat) | 1,0,0,0,0,0,0,0,1,0,0,1,1,1,1,0,0,0,0,0,0 |
| Garfield (Character+Style) | 1,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,1,1,0,0,0 |
| Rutkowski | 1,1,1,1,1,1,0,1,1,0,0,0,1,1,1,1,1,1,1,1,1 |