Full service lumber yard would probably rip them to a custom dimension for a reasonable charge. You could then follow up with a sanding block or router to round over or break the edges.
Take care, Huntindave McCann
SHELL ROCK IA. ,,,,,, "As sailors grow older, the wiser ones move to smaller boats." Thomas Firth Jones, Multihull Voyaging
Take care, Huntindave McCann
