Someone else's jointer?
Positive thinking?
What am I saying? :roll: You can't do it. They're rubbish. Send them to the recycling plant down here in Cornwall. 'Cos it's you we'll only charge postage...
Well you did ask for the easiest way. :lol: Got any hand planes about your person? Not the easiest, but certainly the way it was done, and still is done by some brave souls, since B.N. (Before Norm). In order to shave wastage on thickness it's worth cutting the boards roughly to length first, so you don't have to remove anymore of that bend than you have to.
Cheers, Alf