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Arthemy MergeBlock - ComfyUI

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Oct 24, 2025

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Arthemy

✦ Arthemy MergeBlock ✦

Hello people of Civitai!
This is a simple workflow I created to help you create even more effective "Checkpoint merges" making the testing phase fun and much more accurate.

In short: it automatically generate 6 different sliced merges of two models - always with ~20% of the second model.

In long:

The simple merge of two models entirely mixed with each other, tends to "flatten" the results - after all, in which direction can you move, in that case, if not in simple midpoints between the two models we chose to mix with each other?

MergeBlock allows you to "slice" a model and mix only certain slices of the secondary model into the primary model.

Don't worry - the workflow might seem scary at first glance, but the only thing you have to do is choose your primary model, the secondary model, and launch the merge!

Naturally, I then advise you to test all the resulting models using the same Seed and the same settings every time. If you've never tried this system, I'm sure you'll be amazed at how drastic the differences will be.

If you want a lighter effect, you can reduce all three values within the "Weights" group.

Have fun!

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PS: Keep in mind that the basic workflow of this model merges roughly 20% of the Secondary Model into the Primary Model.

Can you spot in my example image where is the "SAUCE" of my secondary model?

Let's make Checkpoint Merges better together! ^_^