deskthority

What is a good distance between the two halves of a split ergo keyboard?

I find 24cm between the index finger homerow positions comfortable with my RedTilt.

It depends on your body and your posture. There is no "one size fits all".

I find that having a neutral wrist position is the most important thing. Which means that the closer the two halves are, the more they need to be angled toward each other (i.e. inward at the back / outward at the front), and the bigger advantage there is in tenting.

But it also probably depends quite a bit on what the layout of the halves themselves looks like.

The answer is very personal. It depends if you're close from your keyboards, if your chest is large or not, etc… The best manner to know that is to experiment various positions with your device : split keyboard is the most ergonomic since you have a lot of choice in posture.