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| Adjustable FB taper jig http://w-ww.luthiersforum.com/forum/viewtopic.php?f=10102&t=7375 |
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| Author: | TonyKarol [ Mon Jul 03, 2006 2:16 am ] |
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I thought there was a thread going where some one had mentioned a jig for tapering FBs - here is how I do mine, on the table saw with the fence, and this jig. The two lower stops are adjustable to allow for different nut widths. I use a caliper to set the stops as required, then cut with the FB on stop one, then flip over and cut on stop two. 
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| Author: | Serge Poirier [ Mon Jul 03, 2006 3:27 am ] |
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Cool jig Tony, Thanks! 
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| Author: | Tom Harbin [ Mon Jul 03, 2006 4:52 am ] |
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Tony: Do you have any pics showing the fingerboard in both positions? thanks, tom |
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| Author: | TonyKarol [ Mon Jul 03, 2006 8:25 am ] |
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Yep, here they are ... so the fence on the jig itself that runs don the right side of the FB when its in, with the toggle calmap on, gives me the required width for a 2 5/16+ FB, assuming I am going to bind it witha maple 25 thou purf line, then 80 thou of ebiny or whatever. You set stop number two first - its the bottom one - this is the final widtha t the nut, less whatever binding you do. Then set stop number one ot half the distance between the number two stop, and the FB fence with the toggle clamp = now you get even cuts of both sides. Remember to flip the FB form one cut to the next or you take the taper twice off one side - looks weird, ask me how I know !!!! Stop one, first cut, slots up ... 
Here is a close up at the stop ... 
And position 2, close up ... 
Note that for position 2, the stop has a slight angle to it, to make sure the FB sits down fully on the bottom ledge - the stop set the width - actually stop two is the bottom ledge for the FB to sit on during cut one, with stop one setting the width - see the close up. It was mentioned in another thread about just making a board with the offset stops - it will work just as well as this, but its only good for one size of fretboard - if you change the nut width, or add a purf line to the binding you need to make another and so on. I plan to make another of these with it permanently set for 1 3/4 nut and my std purf/binding scheme - this one will then be for the custom sizes. Seeing as this year alone I have had to make from 1 11/16 to 2 5/16 nut widths, plus 6 and 7 and 8 string FB end widths, it has more than done its duty !!! |
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| Author: | TonyKarol [ Mon Jul 03, 2006 8:26 am ] |
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Oh, and the jig just runs against your std table saw fence, set to the width of the whole jig, or more if you are doing a wild 8 string FB conversion on a reso !! |
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| Author: | Tom Harbin [ Mon Jul 03, 2006 9:51 am ] |
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Thanks Tony! How would this work if it were adapted to use one of the miter slots instead of the fence? tom |
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| Author: | TonyKarol [ Mon Jul 03, 2006 12:17 pm ] |
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It would work fine .. I would make the side fence (wher ethe toggle clamp sits) adjustable for width as well though, otherwise you wouldnt be able to make extra wide fretboards if needed, but other than that, sure thing !!! |
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| Author: | Mark Tripp [ Mon Jul 03, 2006 4:34 pm ] |
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Sweet Tony! And timely too - I was just getting ready to make one of these, and have been trying to engineer an elegant way to go about indexing for different nut sizes. Your photos helped a great deal! 
Thanks! -Mark |
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| Author: | MSpencer [ Tue Jul 04, 2006 6:45 am ] |
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Nice jig, thanks for sharing! Mike White Oak, Texas |
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