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Discussion Starter · #1 · (Edited)
Hi everyone! My name is Ben. I would like to ask if anyone has fitted a Prestige neck into an old AANJ body before? I'm aware that the heel of an old AANJ body is 56mm while that of the prestige necks are 58mm.

Right now, I'm having an old RG570 body and a Prestige neck stamped RG1820x. What I would like to know is how i may modify the old AANJ body to fit the prestige neck.

All help is greatly appreciated!!! Thanks in advance too.
 

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You have 3 options:
1. Sand only the body
2. Sand only the neck
3. Sand both

linux is saying sand only the body. The neck will be more expensive to replace than the body if you mess anything up.

His typo just confused you a little:

I would widen the cheaper body than narrow the more expensive neck... just my 2 cents...
 

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please let us know when you get this done, and potentially take some pictures along the way of your progress. Compatibility and modification successes are always appreciated!
 

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You have 3 options:
1. Sand only the body
2. Sand only the neck
3. Sand both

linux is saying sand only the body. The neck will be more expensive to replace than the body if you mess anything up.

His typo just confused you a little:
Correct you are. Im posting from my phone. :p. The prestige bodies work with it, why not?
 

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Hey Ben, sorry it took so long to get back to you. I wanted to take pictures of me doing my Prestige neck (7 string) into non-prestige body (OOTS swirl), but time has not allowed me to do that yet.

What you need to do first is to get VERY accurate measurements of both the heel of your neck and the pocket in the body....right now were only concerned with the width of the pieces. If you have a metric caliper, that would be the best tool to use.

This is a metric caliper:


the caliper does not have to be metal...... but it DOES have to be accurate.

These are the places you want to measure:



If there is paint on the sides of the body cavity, you'll want to sand that away first......if not, get the measurements now.

Your also going to want a metal ruler that has millimeters clearly marked.
I use one that has a cork bottom to avoid unwanted scratches.
You'll use this ruler during the sanding process, so I highly suggest finding one.

Like this:


When you have you measurements, please post back and we'll go to the next step.

Ryc
 

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Discussion Starter · #13 ·
Wow! Thanks so much. Should I measure the places right at the screw holes? I'm afraid if I don't take a reference point, the measurement may be inaccurate.
 

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I stuck a J craft Prestige neck on a RG520 body and all it took was scraping the paint off the sides of the neck pocket. The older,before Jcraft with the walnut stripes, 1570 prestige necks are a direct fit to Fujigen RG bodies.
 

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Wow! Thanks so much. Should I measure the places right at the screw holes? I'm afraid if I don't take a reference point, the measurement may be inaccurate.
using a reference point is always a good idea, but is not really necessary here. the pocket should be the same width throughout. The same goes for the heel on the neck
 

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Discussion Starter · #16 ·
using a reference point is always a good idea, but is not really necessary here. the pocket should be the same width throughout. The same goes for the heel on the neck
OK! I did as i was instructed. I sanded the parts around the neck joint to remove the paint, then I measured.

The neck width is 58.6mm, while the neck joint on the body is 57.1mm wide.
 

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I'm 99% sure this won't work without extensive modification of the body.

Old square-heel necks have a tongue that sticks out with the last couple frets and sits in a channel routed into the body. On an AANJ neck, the fat part of the neck sits basically right up on the neck pickup. You could probably modify the heel and screw hols to get an AANJ neck to bolt up, but you'd totally change the scale length of the guitar, since the 24th fret would be farther from the bridge.
 

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Discussion Starter · #18 ·
I'm 99% sure this won't work without extensive modification of the body.

Old square-heel necks have a tongue that sticks out with the last couple frets and sits in a channel routed into the body. On an AANJ neck, the fat part of the neck sits basically right up on the neck pickup. You could probably modify the heel and screw hols to get an AANJ neck to bolt up, but you'd totally change the scale length of the guitar, since the 24th fret would be farther from the bridge.
um, no. The neck is not a square heel. It is a AANJ neck, but it was made recently compared to the body. The older AANJ have a slightly smaller neck width than the more recent ones. What i'm doing is to slightly widen the body joint to fit the slightly bigger neck in. Thanks for the tip though! :)
 

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OK Ben, now that you have your measurements you know you need to widen the pocket by 2mm. Logic says that you want 1mm per side. the first thing to do is to mark your stop or "finish" line on the body. This is easy to do. Looking at the (bad) drawing below, you want to lightly score your "finish" lines with the sharpest razor blade or exacto knife you can find....... be sure to only score the area paralell to the pocket....DO NOT SCORE THE AREA NEXT TO THE BOTTOM RADIUS (the corners below the dotted line)) only next to the straight edges of the pocket...... if you need to, run a piece of tape in the same place I put the dotted line.

Once you have your "finish" lines on the body wrap the metal ruler with your sand paper (120 grit)....don't let the paper get more than 2 layers thick. the ruler will help you sand the area perfectly flat. Now start sanding the sides til you reach you finish lines, dont worry about the radiused corners yet....I have a trick for those when you get to that point.............post back when your this far.

Ryc
 
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