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| Sorry, Bridge positioning question http://www-.luthiersforum.com/forum/viewtopic.php?f=10102&t=9734 |
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| Author: | molitovv [ Sat Dec 09, 2006 6:33 am ] |
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I am fitting a bridge to a guitar, it has a angled slot and i know you you set it the same distance from the 12th fret as the 12th fret is from the nut, but what string do you use as your measure line, and do you measure as the "string flies" or along a line parallel with the centre line, cheers Matt |
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| Author: | Pwoolson [ Sat Dec 09, 2006 7:24 am ] |
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Matt, the way I do it is take my scale (25.5) and add 1/16 to the high e and 3/16 to the low E. These measurements will need to fall right where the strings will fall as opposed to being right on the edge of the saddle. Hope that helps. Paul Oh, and those measurements are to the front of the saddle. |
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| Author: | crazymanmichael [ Sat Dec 09, 2006 7:26 am ] |
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matt, the 1-12 distance being equal to the 12-saddle distance is not correct. you must incorporate extra distance as compensation to get the the instrument to play in tune. the amount of compensation will depend upon the scale length, string gauge and type, action height, fret height, playing style, etc. compensation is usually measured on the string line if doing individual string compensation. when using a pre-slotted bridge measure on the center line of the fb to intersect a line parallel to the front edge of the bridge and through the center of the treble e position on the center of the saddle slot. the amount of compensation used generally ranges from .010" on a 25.4" scale to .125 or more on shorter scale instruments. see stew-mac's site for a compensation calculator. |
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| Author: | burbank [ Sat Dec 09, 2006 7:43 am ] |
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I think we're talking .100" rather than .010", eh? |
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| Author: | crazymanmichael [ Sat Dec 09, 2006 8:00 am ] |
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digital keyboard actuator control circuit defect rearing its ugly head again. yes, 0.10 is what was intended. thanks! |
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| Author: | molitovv [ Sat Dec 09, 2006 9:17 am ] |
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Awesome guys, as usual. thanks for your help |
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| Author: | JohnAbercrombie [ Sat Dec 09, 2006 10:33 am ] |
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You've gotten some excellent advice. If your present guitar collection includes a guitar with the same scale length (and action, string gauge) that plays in tune, you can make up a 'measuring/positioning stick' from it. For me that sort of thing is always easier than trying to add .010 or .100...or... |
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| Author: | crazymanmichael [ Sat Dec 09, 2006 11:02 am ] |
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hey hesh, i was a math minor, but never did take a proper typing class. so the faulty keyboard activator control system is my excuse and i'm sticking to it. john, nice idea for a simple shop made "saddlematic". |
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| Author: | molitovv [ Thu Dec 14, 2006 7:47 pm ] |
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Hi again, just revisiting this thread again. how can i measure my scale is? all i have is the frets to measure off of (this is a repair job of a smashed guitar) cheers Matt NZ |
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| Author: | John How [ Thu Dec 14, 2006 8:20 pm ] |
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The scale is typically 2x(nut to 12th fret) so the saddle will be located at the scale+compensation. |
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| Author: | af_one [ Fri Dec 15, 2006 12:49 am ] |
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Tracy's centerline finder with bridge locator is a huge help too. |
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