Ok, I did not answer your question as far as where I measure from. If I'm cutting a piece and I'm measuring from left of the blade, six inches, I'd measure to either the right-side or really the middle of the blade or as close as I can to the middle. I'm trying to account for the blade width since it eats material. If anything by measuring slightly more and going to the right of the blade, I might come out a little longer, but it's easier to cut off excess material than it is to add it on. Generally I will measure right up to the blade though and I mean right smack up against the left side of the blade.
On Jul 6, 2008, at 7:44 PM, Dale Leavens wrote: > Where are you mitering to? > > The usual way to fit baseboards is to cope the inside corners and > only miter the outside corners. The next problem is setting the saw > correctly. Sighted people have to worry about parallax, that is, > looking straight on at a ruler or the line marked on stock to be > cut. We have another problem, the edge of a tape measure or even a > story stick has some thickness and the kerf of a saw blade has some > thickness more than the body of the blade. Then, are you measuring > to the same side of the blade? Not a silly question but an easy > enough error to make and modern carbide blades take out nearly an > eight of an inch of material when they cut. Finally, if you are > using a talking tape measure you are only accurate to within a 16th > of an inch. add to that you could be measuring on the shy side of > the 16th and transferring to the proud side of the 16th and you > could be off nearly an eighth. Add that to the mating piece and you > could be off nearly a quarter of an inch. > > Even professionals though do often sneak up on a cut with power > equipment. > > If measuring inside corner to inside corner then the narrowest > dimension over the width of the trim is the correct measure on the > long (back) side. If you are using the face then you must subtract > twice the thickness of the trim material. Measuring the face though > is very difficult to do accurately because you can't get your > measuring device snug into the angle where the tip of the teeth meet > the board. Sighted people look down to the point where the teeth > will be just clipping off the pencil line and they will use a very > sharp pencil to draw a very thin crisp line. > > At the other side, because the teeth attack on the outer angle your > measuring device will either be nearly the thickness of the blade > away from where the outer edge will shave off the wood or it will be > the thickness of the blade too short, a distance increased by the 45 > degree angle which is the root of the sum of the squares of which > the thickness of the blade forms the hypotenuse. > > Eventually though you do learn to fudge the measure a little to get > you very close. With a good miter saw or well tuned and highly > accurate table saw and the material well fixed down it is possible > to shave a whisker off of a cut which brings us back to that > recently and lengthy discussion of inexpensive table saws. It > doesn't take long to spend several hundred dollars on waste material. > > ----- Original Message ----- From: Scott Howell > To: [email protected] > Sent: Sunday, July 06, 2008 2:35 PM > Subject: [BlindHandyMan] mitering trim > ,Folks, I'm in the process of cutting baseboard and the like to > install > in the living room after the flooring project. Now for some reason I > just can't seem to get this baseboard cut properly. I have lets say a > measurement of 6 3/4 and I place the baseboard on the miter saw and I > have tried both measuring with the blade at a 0 angle and then also at > the proper 45 degree angle. In both cases it seems that it's just not > coming out right, it comes out to short. So, can someone offer some > tips on mitering trim so when I cut the pieces, I get the 6 3/4 I need > and the ends will stick out enough to mate up with the other 45-degree > angles to cover the corner? If this didn't make sense, please let me > know. > I'd like to get this right and not waste a lot of material. > > tnx > > Scott Howell > [EMAIL PROTECTED] > > ---------------------------------------------------------- > > No virus found in this incoming message. > Checked by AVG. > Version: 7.5.524 / Virus Database: 270.4.5/1537 - Release Date: > 7/6/2008 5:26 AM > > [Non-text portions of this message have been removed] > > > Scott Howell [EMAIL PROTECTED] [Non-text portions of this message have been removed]
