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FDP Forum / Guitar Mods, Repairs, and Projects / Question on bridge pin fit.


LA , Calif

I try my best
Apr 12th, 2017 06:38 PM   Edit   Profile  

Do to me talking with Bob Cososi whom as many know makes all sorts of saddles and pins. I checked this 2004 Seagull S series grand . The original plastic pins measured .204" below the shoulder and the Tusq set are .208" Bob's are .210".

All are 3 degree taper. Looking at the TUSQ pins in it now none of the shoulders actually touch the bottom of the bridges champer nor do any stings actually go into the slot above the shoulder as 1T pins do , the only one that dies is the low E. On the low E even to get DAddario 12-53 to fit the low E I needed to file a bit off the groove just a bit above where the bridge plate is . Looking inside the pin holes in the plate are a tight fit. It seems that that's the main reason why the pins don't seat and can be rocked just a bit at the top . They hold and don't pop out . And the upper movement might be .005". I just place a bend at the ball end and place the pin in hold it down and pull the string till it stops , I don't force the pins to seat just until they stop lightly.

Would it be prefered to just let the plate wear a bit and then the pins will fit the upper taper better, I ask because in my mind a snug plate to pin fit is priority. Bob said I could get his .210" pins and sand to fit , not sure if he meant the plate end and his .002" is not much. He didn't say I should ream them and didn't push anything . Even with no strings the pins still stand proud of the champer and the plate hole stops them yet the pins do stick out a good 1/4" past the plate and the TUSQ pins do not bend like the cheap plastic ones do, tone wise nothing changed with the TUSQ compared to plastic.

(This message was last edited by catnineblue at 08:41 PM, Apr 12th, 2017)

Contributing Member

The spotlight

looks like a prison break
Apr 12th, 2017 08:13 PM   Edit   Profile  

If that were my guitar, I'd ream the bridge holes to match the larger pins you want to use. The pins should easily slip into the bridge holes all the way to their little shoulder ring below the top knob.

When the string ball is properly locked against the pin and the bridge plate, there is no way for the pin to "pop out." If pins are popping out, it's because the ball is improperly placed against the bottom of the pin--not the side where it should be. Against the bottom, it will pull the pin right out. See link below.

When the strings are tuned to pitch, pulling the pins out is dang near impossible.

Can I go to da bridge?!


LA , Calif

I try my best
Apr 12th, 2017 09:29 PM   Edit   Profile  

I'm going to use the Graph Tech TUSQ pins I have. The .002" more bob's are are not the answer.

The pin's never have popped out even when I used Graph Techs Presentation pin's which are at least .012 to .014" smaller in diameter than the pins I use now I measured them the other day and forget the exact diameter just know what the pins I am using are. I have 2 spares of each type and used them to check.

I haven't tried to pull any pins out with string tension I really doubt they would come out.

There really aren't any issues other than I can rock the pins a bit at the top with string tension which does seem like the pin fit through the plate is tight yet I don't ever force them. I can clearly see the pins ends fit tight in the plate no gaps at all other than the slot of the pin.

I don't have a reamer like I would need. Perhaps the highly qualified tech here would trade labor for some nice old rosewood I have here. He could get 10 1/4" fret board slabs out of it. He's worked on just about every ones guitar who are well known.

FDP Forum / Guitar Mods, Repairs, and Projects / Question on bridge pin fit.

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