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Set up question: Saddle, Truss Rod & Action


Etienne Rambert

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My Guild F-65ce has the best action I've ever seen on an acoustic.

It's the kind of action players dream of having.

 

Samilyn has played it. She can confirm how nice it plays.

 

But here is my problem:

 

The saddle is brand new. It has not been carved, shaved, shaped

or cut. It's just a bone or plastic rectangle with square corners, seated

in the bridge slot.

 

This makes me worry. If the action is this nice and the saddle is

still high and untouched, what does that say about the truss rod?

Has it been adjusted? If so how much?

 

I've looked and I can't tell. No marks.

There is room for adjustment in either direction.

I determined that much..

Should I have a luthier back off the truss rod and carve down

the saddle? But if I did that, the object would be to get what I

already have - a guitar with great action. That seems sort

of stupid. I'm not sure I could explain that to a VN luthier either.

 

 

Or should I just leave it until I have a problem?

 

I haven't measured the action. At the 12th fret though, it's

still fast and it doesn't buzz anywhere up or down the neck. So I'm

not keen on measuring it. It's perfect as it is.

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Guitar was built in 1997. At some point, the saddle was replaced.

I don't know why. But it was never shaved, shaped, carved or cut.

Action has always been very fast since I bought this guitar a year ago.

 

saddle.jpg

 

f65_originalcase.JPG

 

I'm not sure how to explain what I'm doing though.

The action is perfect. The saddle is too high. I want to

check the truss rod and shave the saddle to get the action

to exactly where it is now?

 

It doesn't really make sense to me.

I'm not sure it will make sense to Mr. Binh either. We'll see.

 

I guess it's a nice problem to have.

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My Guild F-65ce has the best action I've ever seen on an acoustic.

It's the kind of action players dream of having.


Samilyn has played it. She can confirm how nice it plays.


But here is my problem:


The saddle is brand new. It has not been carved, shaved, shaped

or cut. It's just a bone or plastic rectangle with square corners, seated

in the bridge slot.


This makes me worry. If the action is this nice and the saddle is

still high and untouched, what does that say about the truss rod?

Has it been adjusted? If so how much?


I've looked and I can't tell. No marks.

There is room for adjustment in either direction.

I determined that much..


Should I have a luthier back off the truss rod and carve down

the saddle? But if I did that, the object would be to get what I

already have - a guitar with great action. That seems sort

of stupid. I'm not sure I could explain that to a VN luthier either.



Or should I just leave it until I have a problem?


I haven't measured the action. At the 12th fret though, it's

still fast and it doesn't buzz anywhere up or down the neck. So I'm

not keen on measuring it. It's perfect as it is.

 

 

It plays and sounds like a dream. Don't fix what ain't broke.

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I'm just worried about how much the truss rod has been turned

to get this low action with such a high saddle. I'm also concerned about

why the previous owner may have replaced the old saddle.

 

I won't do anything to it over here. I'll bring it back

to the States next year and have Jimmie Foster look

at it.

 

I agree though. If it ain't broke don't fix it.

But I'll get someone qualified to check it out.

 

Thanks!

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Marcell, the saddle doesn't look too high, and remember that the truss rod is used to set the relief, not the action. So, if the action is acceptable and the guitar does not buzz anywhere on the neck, those are my criteria for a proper setup. Generally that will mean relief somewhere between 0.004 (very flat neck) to 0.020 (quite a bit of relief) and AT LEAST 1/8 inch of saddle sticking out.. I'm assuming your neck angle is OK.

 

A very tall saddle can be somewhat weak in the slot and might be prone to breaking the bridge slot, but the big problem is too low a saddle

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Marc, there's nothing to be concerned about. High saddle and low action means the guitar will not need a neck reset, probly ever, or, not likely in your lifetime.

 

I'm always on the lookout for high-saddle-low-action guitars for that very reason. Plus they're easy to play, and a higher saddle means better breakangle from br-pins to saddle which puts more string energy into the top.

 

It's a good thing.

 

Truss. FK's sticky thread shows how to check the neck bow. IMO, I like it with almost no relief, darn near none. Nut grooves filed low, action is borderline buzzing at the 12th fret.

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That digital photo doesn't really show the corners.

Viewed from the front, you can see them. They're not

round. They're pointed at the top and then slope off

down the sides.

 

That photo also makes the saddle seem lower than it is.

I'll try to take another one from the front. It's hard to

get a good shot that close-up with this camera.

 

FK: How can someone judge how far a truss rod has already

been turned, ie., how much relief has been applied? I guess

that's the question that's bothering me.

 

JT: I think the nut is new also. I'm not sure about that.

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When I made the saddle on my 000 I purposely made a little scallop in the ends where it extends past the E strings leaving a little point - some Martins were this way and I wanted to emulate it. As far as the truss rod, they work in different fashions but basically they are threaded so that as the nut is screwed tighter it bends the neck backward, reducing relief. Screw it far enough and you'll get back bow. Tighten it far enough and something will break. Loosening the nut either actively or passively puts more relief in, at some point with most rods you will start unscrewing off the end of the rod. Ideally you reach a happy medium where the rod is just enough it tension to (1) counter the pulling tension of the strings and (2) provide just enough relief to ensure playability as JT describes.

 

Here is a pic of a double acting t/r that has really been cranked down, it would be trying to back bow the neck

 

IMG_1126.jpg

 

How can you tell if someone has screwed with it? Ideally someone DID screw with it and put the correct amount of relief into the neck. How do you check? That was the subject of the sick guitar thread. (In a nutshell, capo it at one and hold down the E strings at 12. You should have a little bit of clearance at each fret in between, we usually measure at 6 or 7 and it should be some where around the thickness of on business card. Touching the frets is bad, more than two cards is bad).

 

If you like really low action, like JT does, you need minimum relief - more like 0.004-6. If you like higher action you can get by with a little more relief.

 

I'll just add that like JT, I like medium low nut slots, fairly flat neck (0.006-8) but I like it a little higher at 12 - I often have a broken bottle on my pinkie.

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I finally figured out the macro function on this digital camera.

 

This photo will show how high the saddle is and how it

stops at a point and then flares out.

 

It's not rectangular - but you can see the corners, especially

on the right.

 

saddle4.jpg

 

Thanks for everybody's help. I'm not going to do anything now.

 

Next year, I'll take it to a stateside luthier & make sure the truss rod

has not been turned too much.

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Doesn't look too high to me.

 

If by the corner you mean the top right edge (viewed from picture), the shape of that part of the saddle isn't important. Rounding the corner is just cosmetic. When you said rectangular, I'm assuming most of us thought you meant the narrow dimension, the section that the string crosses over. That portion you want rounded so that the string only touches in a small area.

 

Scott O

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I finally figured out the macro function on this digital camera.


This photo will show how high the saddle is and how it

stops at a point and then flares out.


It's not rectangular - but you can see the corners, especially

on the right.


saddle4.jpg

Thanks for everybody's help. I'm not going to do anything now.


Next year, I'll take it to a stateside luthier & make sure the truss rod

has not been turned too much.

 

 

If anything, you have a very reasonably made instrument with great action and nothing to worry about. The saddle crown flows with the contour of the bridge top surface and seemingly minor details of this nature are indicative of an excellent level of craftsmanship and design. I'd trust any/all remedial work to the luthier originally responsible for crafting this piece and not lose a wink of sleep over it.

 

I wouldn't consider doing any work on this instrument unless absolutely necessary and - judging by your feedback - none is necessary. :thu:

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