"Andrew Barss" wrote in message
...
Swingman wrote:
: "Jeffrey Thunder" wrote in message

: You don't understand. Yes, the resulting angle when you join
: the pieces is indeed 90 degrees. But the joint won't look right.

: Au contraire ... it is you who apparently "don't understand". This is
: woodworking, where the absoutes of mathematical theory are often of
little,
: or no, consequence, because of the tolerances involved.


Horsefeathers. Try a mitre joint with one at 43 degrees, the other at 47
degrees. They'll be off so much they not only feel bad, they look bad.

Why would anyone attempting to build a miter sled for a table saw do such a
sloppy job as to NOT get the two cuts as close to 45 degrees as possible?


: While I will grant you that the "length' of cut becomes an issue the
_wider_
: the stock, you are apparently assuming that most miter joints cut this
way
: are done in wide stock and the angular error is great enough. From
practical
: experience, that is NOT the case in typical woodworking projects.

Try it with, say, a 1.5" wide frame.

You won't cut that on your miter saw either.


: Once again, the difference in angle in a properly built sled is so small
as
: to make joint length mismatch a none issue in the width of the stock
likely
: to be used in the typical woodworking project that requires miter
joints.

Nope.

Yep.


: Now, the 'proof is in the pudding', so to speak. I am telling you that I
use
: such a miter sled on the table saw and that the resultant joints "look"
NO
: differently than when cut on my SCMS, and more importantly, ultimately
fit
: better around the four corners. I routinely use the sled to make picture
: frames, and to frame glass table tops, with NO ill effects on appearance
: whatsoever.

Then you're either got a jig that is very accurately 45 degrees, or
else you're using extremely thin stock.

As you say, "horsefeathers" ... take a look at the picutres I posted.


: Now, lest you think I am the only one ... one of the most asked about
table
: saw miter sleds is the one used by David J. Marks on Wood Works, which
is
: designed using this very principle.

Hunh? I'll bet you a ten dollar bill his jig is within less than half a
degree from perfectly 45/45.

That's the point!


Theory is fine, but practical application, particularly when using the
: tolerances involved in woodworking, is far less likely to stifel
creative
: solutions in cutting tight joints.

: IOW, if you haven't used such a miter sled on a table saw, you need to
: loosen up and give it a try before embarking on a theoretical campaign
to
: discount its usefulness for cutting miters in typical woodworking
projects.

You need to measure your jig's deviance from 45 degrees befoe making such
pronouncements.

You don't read very well do you?


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