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LMI Truss Rod Install
http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=20234
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Author:  Ken C [ Tue Dec 30, 2008 1:25 am ]
Post subject:  LMI Truss Rod Install

Been reading a number of posts and other instructions posted around the internet with respect to mounting the subject truss rod in my OOO, and I need a little clarification. I am mounting the rod so I adjust through the sound hole. I have read a number of posts that recommend keeping the non-adjusting end of truss rod 1/2" to a 1" from the nut. However, if I do that with this rod, then the square block where the rod is welded to the steel back plate sticks out past the end of my tenon into the sound hole. To me, it seems I would want that part of the truss rod firmly seated in the truss rod channel in the neck. If I slide the rod more towards the nut in order to get that square block in the tenon, I only have 1/4" to 3/8" from the other end of the rod to the sound fingerboard side of the nut. Where do I situate the rod? Get the square block with the welds in the channel or make sure I have 1/2" to 1.0" gap before the nut?

Also from everything I have read, seems that I should insert the rod, epoxy in a filler strip, and then level the filler strip. No other culking is needed.

With a little luck tomorrow, I can get the headstock cut and drilled, the truss rod installed, and the fingerboard fretted.

Ken

Author:  Rod True [ Tue Dec 30, 2008 1:49 am ]
Post subject:  Re: LMI Truss Rod Install

You can butt it right up to the end of the fret board if you want to. No harm in that. Think of all those neck with truss rods adjusted at the headstock. They all go under the nut ;)

You can either install the rod flush to the top of the neck or add a shim. I like to add a spline to mine, that way I don't have to worry about epoxy (what I use to attach the fret board) interfering with the truss rod. I set the rod 3/32" lower than it needs to be. I want to leave as much meat in the neck at the nut area so the truss rod doesn't break through the back of the neck when torqued.

Author:  Ken C [ Tue Dec 30, 2008 10:39 am ]
Post subject:  Re: LMI Truss Rod Install

Thanks Rod, I think we were talking the same thing when I was noting shim and you were replying spline. I got the spline glued in this morning. Now off to make a template for my headstock.

Ken

Author:  Rod True [ Tue Dec 30, 2008 11:24 am ]
Post subject:  Re: LMI Truss Rod Install

Ya, shim isn't the right word for the spline :)

A shim of course adds thickness, where as a spline is the strip of wood (or metal) that fills a slot, often used to allow two pieces to rotate together.

But... we are talking about the same thing :D

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