Latest / Big Iron Radio / Homelab Brief - Training LoRAs Locally with Kohya-ss
Transcript
- 0:02Welcome to the Homelab Brief from Big Iron.
- 0:06Today, training your own image model low R-rays at home with Koya SS.
- 0:12Quick note, this is an AI voice drawn from a Big Iron guide.
- 0:16Links below.
- 0:18First, the lay of the land.
- 0:20Koya SS is the de facto toolkit for stable diffusion fine-tuning.
- 0:25And your default choice inside it should be a low R-ray, it's a small file.
- 0:29It needs only modest Vram, and it mixes with any base model.
- 0:34Escalate to low Con or Lycoris only when style and structure come out flat,
- 0:39or to full Dreambooth when you genuinely need a multi-gigabyte checkmate and have the Vram to train it.
- 0:45Decide the mode first before you touch anything else.
- 0:48The guide has a five-question tree subject versus style, your Vram, your file size needs,
- 0:54how much fine detail you need, and data set size.
- 0:56Pick the wrong mode, and you'll waste hours training the wrong thing.
- 1:01Answer those five, then start.
- 1:04Here's the part beginners underestimate.
- 1:07Data set prep is about 80% of the result.
- 1:10Quality over quantity 15 to 30, genuinely great images beats hundreds of mediocre ones.
- 1:17And data set prep has real technique.
- 1:20Use a consistent captioning scheme a trigger word for a subject, content captions for a style.
- 1:25Vary the backgrounds so the model doesn't accidentally learn your couch,
- 1:30along with your face, that's called context leakage.
- 1:33And use the correct resolution for your base model class.
- 1:37On the config knobs, the one that matters most is total steps roughly your image count times the repeats.
- 1:44Get the data set in the step count right, and the rest is mostly defaults.
- 1:48The full walkthrough with that five-question tree is in the show notes.
- 1:53That's your brief.