Here is a crank out window I saved for a customer. They had already replaced two and it cost them $500 plus the cost for me to finish them. This was a bargain! You can see an entire 1/4” lip that runs almost the width of the window was rebuilt.
After the S-1 cured the Sculpwood Epoxy Paste was used to fill the cavity. The hardware was re-installed after the Paste cured.