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 Post subject: Re: Truss Rod Advice
PostPosted: Sat Feb 09, 2013 9:45 am 
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Walnut
Walnut

Joined: Thu Jan 03, 2013 2:23 pm
Posts: 24
First name: Christopher
Last Name: Parker
City: Fatetteville
State: AR
Zip/Postal Code: 72701
Country: USA
Focus: Repair
Status: Professional
Congratulations! The way to check to see if the rod rattles is simply to knock on the neck with your knuckles - if it passes the rattle test, I think you've succeeded.


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 Post subject: Re: Truss Rod Advice
PostPosted: Sun Feb 10, 2013 4:31 pm 
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Cocobolo
Cocobolo

Joined: Tue Nov 20, 2012 8:59 pm
Posts: 372
First name: Aaron
Last Name: Thompson
City: Atlanta
State: Ga
Zip/Postal Code: 30308
Country: USA
Focus: Build
Status: Semi-pro
Christopher Parker wrote:
Congratulations! The way to check to see if the rod rattles is simply to knock on the neck with your knuckles - if it passes the rattle test, I think you've succeeded.

Well I haven't knocked on it with my knuckles but the neck has undergone a lot of sawing, clamping and general moving around while cutting the tenon, taper and so on and so forth. Would the rattle be loud?

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 Post subject: Re: Truss Rod Advice
PostPosted: Mon Feb 11, 2013 10:35 am 
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Koa
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Joined: Sat Apr 19, 2008 10:08 pm
Posts: 1958
Location: Missouri
First name: Patrick
Last Name: Hanna
State: Missouri
Country: USA
You've got the rod in, so I'm late in the game with this comment. But it might be useful for your next instrument or for someone reading this thread. You can wrap the rod with teflon plumber's tape--the same stuff they use to seal pipe threads. This is a quick and easy way to pad the rod and ensure that it operates smoothly. It makes for a very comfortable press fit in the channel. Just a simple spiral wrap does the trick.
Patrick


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 Post subject: Re: Truss Rod Advice
PostPosted: Mon Feb 11, 2013 10:51 am 
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Cocobolo
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cphanna wrote:
You've got the rod in, so I'm late in the game with this comment. But it might be useful for your next instrument or for someone reading this thread. You can wrap the rod with teflon plumber's tape--the same stuff they use to seal pipe threads. This is a quick and easy way to pad the rod and ensure that it operates smoothly. It makes for a very comfortable press fit in the channel. Just a simple spiral wrap does the trick.
Patrick

Thought about that. Makes sense. I had to pick something and what I did apparently worked. Good to know for the future.

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 Post subject: Re: Truss Rod Advice
PostPosted: Wed Feb 13, 2013 5:28 pm 
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Cocobolo
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First name: Aaron
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Country: USA
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I'm about to glue the fretboard on but I have a question before I do that. Is there anyway to test the trust rod and its function before gluing the fretboard on? I tried tightening the truss rod but didn't get any back bow. Now the neck isn't carved and it's also over an inch thick. I imagine this makes a difference. I also imagine that after gluing the fretboard on, the filler strip will become more stable and give the truss rod more to press against. Any thoughts?

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 Post subject: Re: Truss Rod Advice
PostPosted: Wed Feb 13, 2013 11:29 pm 
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Walnut
Walnut

Joined: Thu Jan 03, 2013 2:23 pm
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First name: Christopher
Last Name: Parker
City: Fatetteville
State: AR
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Country: USA
Focus: Repair
Status: Professional
absrec wrote:
Christopher Parker wrote:
Congratulations! The way to check to see if the rod rattles is simply to knock on the neck with your knuckles - if it passes the rattle test, I think you've succeeded.

Well I haven't knocked on it with my knuckles but the neck has undergone a lot of sawing, clamping and general moving around while cutting the tenon, taper and so on and so forth. Would the rattle be loud?
It's pretty obvious if the rod rattles. Again, just give it a good rap with your knuckles (like you're knocking on a door). If the rod's rattling, you'll know. If it's somehow frozen in place with glue, or in a bind because you clamped the fillet in too tight, it won't be apparent until you get a little further along.

absrec wrote:
I'm about to glue the fretboard on but I have a question before I do that. Is there anyway to test the trust rod and its function before gluing the fretboard on? I tried tightening the truss rod but didn't get any back bow. Now the neck isn't carved and it's also over an inch thick. I imagine this makes a difference. I also imagine that after gluing the fretboard on, the filler strip will become more stable and give the truss rod more to press against. Any thoughts?
I doubt it would move too much until you get it closer to final thickness. I think the thing to do is to glue on the fingerboard, and rough carve the neck closer to final dimensions, and then try the rod again. If it works, proceed - if not, bail and start over.


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 Post subject: Re: Truss Rod Advice
PostPosted: Thu Feb 14, 2013 12:42 am 
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Cocobolo
Cocobolo

Joined: Tue Nov 20, 2012 8:59 pm
Posts: 372
First name: Aaron
Last Name: Thompson
City: Atlanta
State: Ga
Zip/Postal Code: 30308
Country: USA
Focus: Build
Status: Semi-pro
It's definitely not rattling. I'm able to (with a bit of muscle) slide the rod in it's channel. It doesn't have much room to do so but I know for sure it's not stuck. It's sitting in a curved channel which, once carved, should be sitting around 1/8" to 3/16" from the back of the neck at its deepest point.

Anyway, what you said was basically my plan. The fretboard is glued and drying at the moment. Shouldn't be too long before I can fire it up. I'm pretty excited to get it all put together.

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