Structural repair and replacement of rotten wood

I have a log home and there's a great company I've used to repair rot in logs and other pine/softwood lumber called Permachink

Here's the stuff they sell; (two stages)
M-Balm
You don't remove the soft, punk wood. This stuff converts it to solid strong wood again.
https://www.permachink.com/products/wood-restoration/m-balm

E-Wood
Once you've preserved the damaged wood, you fill in the wood that is missing with this stuff.
https://www.permachink.com/products/wood-restoration/e-wood