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Post by boodrow on Feb 5, 2010 18:52:29 GMT -6
OK for all u math gurus on here I have a question that yall can help me figure out. I have a 1x6 that is actually 5 1/2 inches wide.
I want to cut two coves spaced equally between the top , bottom and center of the piece of wood. The blade is a 10" blade. So if someone could help me figure the diameter of the cut to even space it to have 3 flat areas. One on top , one in the center and one on the bottom I would dance at ur next weddin. I want to also make the cove 3/16 deep on the 2 cuts.
Boodrow
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Post by Ruffnek on Feb 5, 2010 19:34:59 GMT -6
If you want the coves the same width as the flats, then it works out to er, hold on a minute...about 1 3/32".
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sawduster
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Post by sawduster on Feb 5, 2010 19:58:21 GMT -6
If the coves are to have the same width as the flats, you need to divide the 5 1/2 " width of the board by 5 which gives you 1.1 " for the width of the cove. According to the calculator on this page the radius for an arc with a height of 3/16" will be ~ .9" so the diameter will be ~ 1.8" |
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Post by Ruffnek on Feb 5, 2010 20:04:09 GMT -6
If the coves are to be 1.8" wide then the flats will have to be about 5/8".
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Stretch
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Mark Muhr
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Post by Stretch on Feb 5, 2010 20:14:42 GMT -6
If the coves are to be 1.8" wide then the flats will have to be about 5/8". I think Jerry is talking about the diameter of the circle that the arc of the cove is a part of. I think the point is that it's going to be hard to get a 3/16" deep arc that is only 1 1/8" wide out of a table saw blade. My method of choice would be using a large roundnose bit on the router table. So Boodrow, if you can't get it to work on your table saw and don't have a router bit big enough, I've got a big round nose bit we could use. You could bring your lumber up to my place and we could get it done. |
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sawduster
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Post by sawduster on Feb 5, 2010 20:22:48 GMT -6
If the coves are to be 1.8" wide then the flats will have to be about 5/8". Stretch nailed it. I thought that was what Boo was asking. I came up with the flats and coves being equal, their width would be 1.1" which is right at the 1 3/32 (1.09375") you came up with. It'll be a real PITA to get a cove cut with a 10" blade down to a diameter just under 2". The fence is gonna be just a smidge off of parallel to the blade to do it. Sure there's a formula somewhere for calculating that, but . . . Or maybe cut some teeth into a blade stiffener of the right diameter.  |
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Post by TDHofstetter on Feb 5, 2010 23:18:29 GMT -6
Like this, right?  The spacing is 1.1", the coves are 1.8" diameter. |
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Post by boodrow on Feb 6, 2010 5:40:35 GMT -6
Thanks fellers , I think all of yall are correct. The more I think about it the more PITA it will be to try to cut these on a table saw. I will do some soul searchin and see if I want to screw up a bunch of scraps tryin to get this set up rite, if not I mite holler at u stretch and come up to ur shop.
Tim the drawing is just what I want it to look like.
Thanks again
Boodrow
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Stretch
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Mark Muhr
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Post by Stretch on Feb 6, 2010 13:35:32 GMT -6
Thanks fellers , I think all of yall are correct. The more I think about it the more PITA it will be to try to cut these on a table saw. I will do some soul searchin and see if I want to screw up a bunch of scraps tryin to get this set up rite, if not I mite holler at u stretch and come up to ur shop. Tim the drawing is just what I want it to look like. Thanks again Boodrow Sounds good Boodrow. Just let me know. My shop"s always open. |
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