And the older you get, the more it becomes "barely see".
Just talked to a major woodworking tool manufacturer, hand tool division, and
we spent time discussing how measurements were taken and checked in ye olden
days. Mostly, they weren't. Story sticks did the job, as they'll do it today.
Simple, quick, repeatable almost unto infinity, and CHEAP!
"Bore, n.: A person who talks when you wish him to listen." Ambrose Bierce, The
I do some metalworking too, so I have tooling to measure WAAAY tighter
than is needed for woodworking. I do my designwork on the computer,
and sometimes I can't avoid having things come out in 64ths, as much
of a pain as that is. I do avoid it where possible.
I've never used incra stuff. it seems to me to be well made and
cleverly designed. My uneasiness with it is around the closed system
thing- their stuff seems like it's designed to have you "need" another
gizmo from their high priced line to do pretty much any next process.
But there is one very notable exception to the "32ths is all we need
for woodworking" thing: toolmaking. This should be obvious to you,
Pat. Shopmade tooling should be as accurate as you can make it,
especially something as much used as a crosscut sled. It's not
unreasonable to hold tooling to an order of mgnitude better tolerances
than cabinets or furniture that are the actual product of the shop.
but you do want your crosscuts to come out nice and square, right? And
without having to worry about them....
I'll go along with the "tool maker" needing to
use 1/64" where practical, but that comes into
play very rarely for most folks.
In the construction of a cross-cut sled, measuring
isn't really needed as much as being able to produce
a "square edge", which can be done, with very little
in the way of measuring....
yabbut.... the guy has some nice machinist grade measuring stuff and
likes to use it. there sure ain't no harm done by dialing in a
crosscut sled and the method he described is easy, fast and
That certainly may be the case, a methodology for adjusting a sled to
square without measuring is certainly possible. The result and final
precision will probably be very close to the same as obtained by using
precise measuring tools and a couple of fine adjustments. The methodology
I used with a few relatively inexpensive measuring tools was one I found to
be relatively fuss-free, requiring only two tuning taps to the back fence
to get the precision I desired.
As Bridger indicated, this effort was expended on a tool that I plan to
make extensive use of in the future. I certainly do not use such
measurements for assembly of furniture; my use of these precise
measurements is reserved for setting up the equipment.
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