>To those of you who hate analysis, engineering and
>especially maths, but prefer honest sweat and shavings,
>I say: Move along, nothing to see here.
>
>Hmmm. Gone kinda quiet. Anyway...
Not in this crowd, Paul.
[Long treatise on calculating the sagitta beneath a chord
snipped, sadly.]
>I actually worked all this out for my own curiousity, which may speak
>volumes about me. If it interests, intrigues or amuses fellow galoots, my
>cup will be full indeed.
>
> BugBear.
Enjoy your full cup, Paul. But I can't resist making a few
comments. After all, how often do I get to delurk?
First, the assumption here is that the mouth is at the center
of the plane, and all of mine are rather towards the front of
the sole. This doesn't really significantly affect Paul's
calculations, so let us press onward.
Second, the 'stute galoot will observe while planing that his
boards become crowned rather more than the calculations show.
As the plane approaches the end of the board it begins to
overhang, and the apparent length decreases until the mouth
reaches the end of the board. At this point, the iron is at the
very front of the apparent length and is taking a full depth
shaving. The reverse is happenening at the start of a stroke,
of course. Texts say to keep pressure on the toe at the start
and on the heel at the end of a stroke, which I think is to
counter this tendancy. That's never quite been enough for me,
though, and I always joint the middle until the board eyeballs
straight, then take a full-length pass and call it flat.
Comments?
Tom Dugan
Still Living in Lower Marlboro, but just changed jobs and
am working in the deepest suburbs of Baltimore. Temporarily,
thankfully. I need to cut down from my current 57-mile one-
way commute. That should happen once they move me south another
15 +/- miles.
And I beg pardon if I'm rehashing someone else's reply. It's
tough staying current when receiving digests.
Now back under the porch...
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