The only way 1″ thick rough-cut hardwood lumber can plane out completely to 13/16″ or 3/4″ thick is to skip the flattening and just plane the lumber.

Transforming a long, gnarly plank of rough lumber into a set of perfectly milled ... Cracks in a board’s ends are a common flaw. Cut them off before you do any other crosscutting, so you know ...