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PostPosted: Tue Jun 04, 2019 10:07 am 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Aug 19, 2005 4:02 am
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Location: The Woodlands, Texas
First name: Barry
Last Name: Daniels
The heel should have no glue AT ALL!


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PostPosted: Tue Jun 04, 2019 11:28 am 
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Mahogany
Mahogany
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Joined: Wed Feb 07, 2018 4:31 pm
Posts: 78
Location: Central KY
Country: United States
Focus: Repair
Status: Amateur
Thanks guys, I will certainly follow your experience next time around.

That being said, what methods do you use to floss the joint?


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PostPosted: Tue Jun 04, 2019 12:17 pm 
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Brazilian Rosewood
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Joined: Thu Feb 12, 2009 12:12 pm
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First name: Bryan
Last Name: Bear
City: St. Louis
State: Mo
Country: USA
Focus: Build
Status: Amateur
With the neck held in position, insert sandpaper strips between the body and the neck and pull it through while holding the neck to the body. As the back of the paper rides the body the cutting side sands the body shape into the neck heel. By altering the number of strokes and how much you sand each surface, you can make adjustments to the neck angle and center aliment.

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Bryan Bear PMoMC

Take care of your feet, and your feet will take care of you.


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PostPosted: Tue Jun 04, 2019 12:20 pm 
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Mahogany
Mahogany
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Location: Central KY
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Good deal. That's how I altered the angle on this guitar. I suppose it's something that will take patience and practice.


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PostPosted: Tue Jun 04, 2019 1:01 pm 
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Mahogany
Mahogany
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Location: Central KY
Country: United States
Focus: Repair
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Next on the block, probably.

Attachment:
Screenshot_20190604-135607_QuickPic.jpg


Attachment:
20190601_123931-min.jpg


Look closely... yes, another Takamine. Seems like this neck design could be attached with dowel rods instead of a dovetail. May be able to actually heat this one off.


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PostPosted: Fri Aug 16, 2019 11:42 am 
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Mahogany
Mahogany
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Posts: 78
Location: Central KY
Country: United States
Focus: Repair
Status: Amateur
Followup on the last post I made. This guitar presents a new set of challenges with a cutaway and wide/flat neck heel.

The f/b extension was very difficult to loosen on this guitar. Something about 45 years of hardened epoxy, probably. Nonetheless, it finally gave up but took some spruce with it.

Attachment:
20190729_211118.jpg


Attachment:
20190730_211414.jpg


Using the wire EDM at work, I removed all the dead space from the end of my Japanese saw so I could effectively cut square into the neck heel and not remove the fretboard. It worked pretty well, but due to the different angles I was working with - and no side wood to help maintain flatness near the cutaway - I cut into the side wood of the guitar's body a bit. Here you can see that I've already drilled bolt holes in the body. I should have done it this way with the last guitar, but I suppose lesson learned.

Attachment:
20190808_205106.jpg


I've already relived the heel in the this photo and marked where the thread inserts need to go. Sadly the existing dowels caused the drill bit to wander, so I need to re-drill those larger and glue in even bigger dowels.

Attachment:
20190808_205818.jpg


So right now I'm looking at replacing the piece of trim on the body that I cut into, and gluing in a thin piece of "something" to sand back down where I removed the side wood. Any suggestions for this process?


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PostPosted: Fri Aug 16, 2019 5:54 pm 
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Mahogany
Mahogany

Joined: Thu Feb 15, 2018 11:06 am
Posts: 52
First name: Roy L
Last Name: Smith
City: Apache Junction
State: Az
Zip/Postal Code: 85119
Country: USA
Focus: Repair
Status: Amateur
Not sure what you actually did to your razor saw with the wire EDM. Can show a pix? My razor saw only has about the last two inches sans the supporting metal backing. I managed to saw thru to the fretboard just using the end of the saw, but it was a bit tricky. I may have to buy one of the stew Mac saws. Wonder if you could clamp a guide on the cutaway side? Nice job of sharing. Thanks. Roy


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PostPosted: Mon Aug 19, 2019 8:01 am 
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Mahogany
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Joined: Wed Feb 07, 2018 4:31 pm
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Location: Central KY
Country: United States
Focus: Repair
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flemsmith wrote:
Not sure what you actually did to your razor saw with the wire EDM. Can show a pix? My razor saw only has about the last two inches sans the supporting metal backing. I managed to saw thru to the fretboard just using the end of the saw, but it was a bit tricky. I may have to buy one of the stew Mac saws. Wonder if you could clamp a guide on the cutaway side? Nice job of sharing. Thanks. Roy


Here you go - this is a StewMac saw too. I just removed the very tip without any teeth on it.

Attachment:
68821132_348818832736823_5407363254433349632_n.jpg


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PostPosted: Mon Aug 19, 2019 8:16 am 
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Mahogany
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Location: Central KY
Country: United States
Focus: Repair
Status: Amateur
Got the inserts in place, but neither hole is perfectly aligned to the body. I think I'll just have to drill the body holes out larger and maybe use a stainless plate like I did on the Parlor guitar.

Attachment:
20190817_121836.jpg


Binding removed.

Attachment:
20190817_121757.jpg


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PostPosted: Mon Aug 19, 2019 9:09 am 
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Mahogany
Mahogany
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Location: Central KY
Country: United States
Focus: Repair
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So as not to hide my non-professional skills, I just wanted to point out this booger. I made the mistake of lightly tapping the dowel into place, and it popped out the mahogany on the neck heel. You can also see a line on the edge of the heel that has been re-glued - this was due to using a chisel on it at a poor angle and causing it to split. Several curse words were used during this process. Shame on me, but I did learn another two lessons this time around. Sadly I have more guitars with this same type of thin doweled-on heel, and they're very difficult to work with.

I always tell myself "nothing can be broken that can't be fixed somehow." I'll cover it back up with polyurethane and make it as nice as possible.

Attachment:
20190817_121151.jpg


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PostPosted: Mon Aug 19, 2019 11:10 am 
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Mahogany
Mahogany

Joined: Thu Feb 15, 2018 11:06 am
Posts: 52
First name: Roy L
Last Name: Smith
City: Apache Junction
State: Az
Zip/Postal Code: 85119
Country: USA
Focus: Repair
Status: Amateur
Looks like you filed or sanded off the head of the brass inserts..is that because you weren't sure you had enough heel wood to sink them below the surface? Was it difficult to do that without overly impacting the heel connecting wood surface? Roy


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PostPosted: Mon Aug 19, 2019 11:28 am 
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Mahogany
Mahogany
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Joined: Wed Feb 07, 2018 4:31 pm
Posts: 78
Location: Central KY
Country: United States
Focus: Repair
Status: Amateur
flemsmith wrote:
Looks like you filed or sanded off the head of the brass inserts..is that because you weren't sure you had enough heel wood to sink them below the surface? Was it difficult to do that without overly impacting the heel connecting wood surface? Roy


Correct - I had a little more than 1/8" sticking up, so I just buzzed it off with my pneumatic angle grinder.

As it was I already went a little too deep with the one on the bottom side. That neck heel has VERY little thickness at that point, less than 1/2".


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