"john" wrote in message
...
I bought an old cast iron Craftsman 6 1/8" planer jointer (three blade)
last week. I bought new blades and installed them. I have them set to be
the same height as the bed. Now, at the blades, the back half of the bed
raises on an angle, the blades with it. The front stays level. I figured
why the back bed has to rise, to keep the cut level and not get constantly
deeper, using the front of the bed as the guide. Why is the back bed flat
if it raises on an angle? Why not raise and remain level? How do I feed a
board across the bed properly, to flatten the high part of the wood? Is the
flat surface of rear bed (angled during cutting?)used for anything?

I can't imagine what you are talking about. Get a book from the library on
how to use a jointer; should answer all your questions.

Nothing on a jointer is angled.