On Fri, 22 May 2015 20:40:21 -0500, Ignoramus8699
<ignora...@NOSPAM.8699.invalid> wrote:
It isn't even, perhaps, a lot slower then what some of the people here
seem to be doing with their high speed, tiny cuts.
One of my last jobs during my apprenticeship was to rough out some
wood planer heads from some 12 inch "line shafting" that was removed
from an old woolen mill when they converted from overhead shafts.
This is from memory but the cutter head would have been about 2 feet
wide, plain bearing on one side, say 6 inches and a bearing and two or
three V pulley on the other. Say 3 and a half feet over all. The ends
were, say 2 inch and the cutter head about 6 maybe 7 inches. So more
or less, three inches of cut over the head and more over the end
shafts.
We were taking about a 3/8", maybe 7/16", deep cut and the rotational
and cutting speed was set to get a very light brown chip. A single
pass took ~about 3 hours to remove 581 cu. in. or material, or 194 cu.
inches/hour. Of course, as the work got smaller the rotational speed
was increased but the depth of cut was always the same. Until we got
to the bottom, of course :-)
As we had an automatic stop on the feed the old machine didn't take a
full time manager, just a quick look every 15 minutes or so :-)
--
Cheers,
John B.