Roger Shoaf wrote:
For a straight edge I think the first question you need to ask is just how
straight do you need it? If for instance if you could live with it being
out of straight by .005 in 3 feet you might be able to find that in an off
the shelf piece of cold rolled steel. If you needed it more precise than
that, you might be able to get the edge ground.

Do you really need it hardened? If not the plain steel is probably going to
do you just fine. Do you even need steel? If all you are doing is drawing
straight lines or checking a piece of lumber, you can get a piece of
aluminum, set your jointer to shave off .005" or so and dress the edge your
self. If you ever drop it and bugger the edge you can always flatten it
again.

All true. Or you can buy specified stock and not worry yourself with
questions.

er
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