Short neck block after sanding rim

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bnjp
Posts: 38
Joined: Wed Dec 28, 2011 9:22 am

Short neck block after sanding rim

Post by bnjp »

I started this kit build two years ago and have put it away several times as I got busy. First of all, I regret now not getting the dovetail version (Stewmac "D" kit)....but as I sanded the rim, I've lost about 1/4" off the top of my neck block. It wouldn't be a huge problem except that I'm thinking the holes won't line up now and the neck will sit proud of the top. Should I plug the holes and redrill them now? You can see the hole where the truss rod adjustment is is almost sanded through.

I think this probably came from me using a 28' dish (which was okay to do according to Stewmac) instead of the 40' and it just took too much away when I sanded. My rim thickness at the neck is now 3 1/2" and 4 5/8" at the tail.

How do I avoid that problem next time if I still want to use the 28' radius? It took the kerfing down the same amount on the ends too. (It seems I saw John sanding the rim on a dish before installing the kerfing once???) The good news is the top fits perfect! but I'm gonna have a problem with the neck joint.

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Bryan :)
johnnparchem
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Re: Short neck block after sanding rim

Post by johnnparchem »

I would not worry now, when it is time to set the neck you can extend the hole into slots if you are off a little or fill them with a dowel and re drill. When you sand a dome on the rims you do end up sanding down a bit to get the top to seat on the waist.
bnjp
Posts: 38
Joined: Wed Dec 28, 2011 9:22 am

Re: Short neck block after sanding rim

Post by bnjp »

Thanks John. It's gonna be off by about 1/8" so I'll have to do something. I would imagine sanding in the dish the way i did is the best way, but the it seems stewmac's instruction way (to use a board with a 1 1/2 wedge attached would taper the edges uniformly but not create a perfect mate with the sides and top.

I know it's not perfect, but it'll definitely make a guitar. I can't believe how perfectly the top sits on the guitar once I notched the kerfing. It's amazing really how well that worked using the radius dish.
Bryan :)
johnnparchem
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Re: Short neck block after sanding rim

Post by johnnparchem »

For 1/8th" when you need to fit the neck I would go at the holes with a rat tail file making them a little bigger. I agree you top will fit nicer the way you did it. If you have a 28' dome the body angle for the fret board extension should be close.
tippie53
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Re: Short neck block after sanding rim

Post by tippie53 »

before you go any further , set the neck in and see where you are in alignment with the holes for the bolts. I agree it isn't a big deal but it will be easier to adjust the holes for the bolt now than later,
John Hall
Blues Creek Guitars Inc
Authorized CF Martin Repair Center
president of Association of Stringed Instrument Artisans
http://www.bluescreekguitars.com
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