A Tale of Two Guitars #4: Truss Rod Channel and Tenon

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Blog entry by fatandy2003 posted 03-07-2016 06:29 AM 1464 reads 0 times favorited 2 comments Add to Favorites Watch
« Part 3: Scarf Joint and Heel Block Part 4 of A Tale of Two Guitars series no next part

Alright, it’s been a while since I posted. Here is the neck after the scarf joint and heel block have been glued up and then cleaned up with a block plane. Everything needs to be squared up at this point in order to get a good (clean) routed channel for the truss rod.

I didn’t take a picture while routing the channel, well, because you all know how a router table works… and I was a little busy keeping my fingers away from the spinning bit. But, basically, you mark the center of the neck blank, then set up your router table to take an equal amount of material from each side of center. It is best to choose a bit that is big enough for the truss rod to fit snugly into the channel without binding. I did not have to right sized bit, so I used a smaller bit and flipped the neck from side to side, taking off about 1/8” inch per pass.

Next, the tenon had to be cut. My table saw is good for rough cuts, but I was too worried about messing my blank up at this point, so I used a Veritas handsaw. I find I can cut more accurately with much less clean up.

Cutting the shoulder


And the tenon.

You notice that I cut slightly angled in toward the tenon on the shoulder. That is so that the area that I will have to match to the sides later is smaller. The key is to cross your baseline at the point where it intersects the anticipated fretboard (you can see the 2 pencil lines of you look close at the above photo).

Quick picture with the truss rod in.

And then time to clean up the tenon. The shoulder…

And the tenon…

Thanks for reading!



-- -- Andy, “Those who expect to reap the blessings of liberty must undergo the fatigues of supporting it” - Thomas Paine

2 comments so far

View bearkatwood's profile


1837 posts in 2470 days

#1 posted 03-08-2016 12:18 AM

Looking good, I like the wood combo. So you went with a bolt in approach and a martin style (U) truss rod, nice ;) Nice progress. Hey where is your vise handle?

-- Brian Noel

View fatandy2003's profile


262 posts in 3702 days

#2 posted 03-08-2016 05:43 AM

Thanks. I am going with a bolt on because the majority of the build blogs say that is their go-to neck. I bought the truss rod from Grizzly.

The vise handle used to have a golf ball screwed onto each end, but when we moved back to the states, the movers broke both golf balls off. I have been too lazy to re-make a handle, so I keep a 1” dowel on the bench that I use to tighten/loosen the vise…

-- -- Andy, “Those who expect to reap the blessings of liberty must undergo the fatigues of supporting it” - Thomas Paine

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