Would a pipe be good for this? That way you could roll it along the
workpiece and see low/high spots as it went along...
Though I don't know if a pipe would be straight enough... I was just
throwing it out as another possible idea.
A pipe is just as likely to be as strait as a lot of the aluminum bar or
extrusion suggested in this thread. After machining literally tons of this
stuff, I have come to not trust it even as far as I could throw it. I guess
it depends on your definition of strait.
I have a cutting guide similar to the one you have described, but it
is about 20 years old. One day, I held the two sections edgeto-edge.
What a disappointment; there was a lot of light shining through.
I hope your edge guides are better. I don't know of anything in the
extrusion process that would necessarliy produce a straight or flat
product. I suspect that there may be some post processing to yield a
saw guide that is straight and flat. The bar stock in the home
centers has not had any post processing.
Ken, Glad you found something that works. I live near both a J & L
Industrial and a Production Tool store. I would probably have simply
bought a suitable piece of ground flat stock perhaps .250 thick by 1.5"
wide and been done with it.
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