How to cut a tapered joint. - Woodworking Talk - Woodworkers Forum
 
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post #1 of 8 Old 02-01-2007, 10:43 PM Thread Starter
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How to cut a tapered joint.

I need to cut a tapered miter out of maple plywood for a table leg. I also need to make a pyramid out of the plywood as well. Can I get some suggestions on making a jig for my table saw in order to cut these? Thanks for the imput.
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post #2 of 8 Old 02-01-2007, 11:11 PM
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Welcome to the forum.

Do you mean a beveled miter . . . . or a tapered leg?
And how big does this pyramid need to be because cutting the triangles on the table saw would not be hard but a straight edge and circular saw with a sharp, thin kerf, high teeth count carbide blade might be even easier.
I think the angle of the great pyramid was 52ish but that is working from memory from a book called Fingerprints of the Gods by Graham Hancock. You can use any angle you want obviously.
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post #3 of 8 Old 02-01-2007, 11:19 PM
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This question comes up from time to time on different forums. Unfortunately, I can't give you the answer. After a little research, this link looks like it might be the easiest, but is still a little "mathy" for me.
http://mathforum.org/library/drmath/view/56462.html

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post #4 of 8 Old 02-01-2007, 11:21 PM Thread Starter
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couter support

I am making the pyramids 15 inches. The tapered joint will be from about 4 inches to 6 inches or so and 32 inches tall. It is for a support under a granite counter top.
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post #5 of 8 Old 02-01-2007, 11:27 PM
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Making a jig would be relatively easy with the use of a couple sacrificial sleds made up just for these cuts. Getting the bevel and miter numbers sounds like the challenge to me.

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post #6 of 8 Old 02-01-2007, 11:34 PM
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Wow! This is a pretty neat pyramid calculator. Will have to bookmark this for that day when I too have to build a pyramid.
http://www.1728.com/volpyrmd.htm

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post #7 of 8 Old 02-02-2007, 07:10 AM
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I still don't know what you mean by "tapered" joint. Are you calling a bevel a taper? Are you talking about the bevel edge on the mitered sides of the pyramid parts? I don't think so because I can't picture what you mean when you say "the tapered joint will be from 4 - 6"

But alpine don't think it is you, I ain't the brightest bulb in the chandelier when it comes to visulaizing what other describe.

That calculator Rob linked to is awesome! Hope it is what you are looking for I can't imagine the math that went into writing the software for that.
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post #8 of 8 Old 02-02-2007, 08:31 AM
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Sounds to me like you want to make a tapered leg with a miter. If so I use a premade taper jig. They're inexpensive, but just googling a picture of one will give you the idea how to make one if you prefer.
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