SNIP
Now, if you get a
straight edge, scribe the opposite so you have a line parallel to your
straight edge. Lay a low spot on the outfeed gently, take off the high spot
following, work until the board is approximate, then run for straight, and
you'll get pretty parallel.

A jointer is a motorized plane, and the techniques used are similar.

Cut and past from a previous message in the thread. Just how do you figure
they made boards before dedicated thickness planers?

"Mike G" wrote in message
...

However, if you have to make a comment, make it useful rather then a
useless
noise on an obscure and complicated point. Describe how one goes about
accurately making two edges or faces parallel using a jointer.

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