![Priming OSB](https://www.woodworkersjournal.com/wp-content/uploads/Zinsser-BIN-QA-Lead.jpg)
What can I use to prime oriented strand board so I can paint it without loosening the outer flakes?
Michael Dresdner: Any primer will work. While waterbased ones might swell the outer pieces, they will not loosen them. For interior applications, I prefer Zinsser BIN, which is shellac-based.