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Old 01-02-2010, 12:28 AM   #1
metalwarrior40
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How to: Scarf joints

First off let me say that this is by no means the only way to cut and do a scarf joint. However, with the tools i have, i found this to be easiest with me. I'll cover more ways in the future, but this should suffice for now.


I.The jig
II. Using/setup with jig
III. Preparing the headstock joint

---Then it branches off to two ways of gluing on the headstock.--

IV.Scarf joint type #1
V. Scarf joint type #2

VI.Last steps/finishing touches.
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Old 01-02-2010, 12:29 AM   #2
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I. Making the jig
This is made of 1.75" by 1.75" poplar. You can get this at any home depot place. I already had some laying around.


* I forgot to take pictures when i made this, so i just drew it all out*
1. First, we cut up three pieces, and put them together like so:


2.We then using a protractor, mark out 15* (or what ever you want) degrees.


3. We make the cut. Easiest way to do this is a miter saw, but it can be done by hand as well.
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Old 01-02-2010, 12:29 AM   #3
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II. Setup, drawing out your scarf, etc.

Drawing the joint
For this part, you just need a protractor, a square/ruler, a pencil, and your blank.
1.Draw a line across the top of the blank, where you want the nut to go.
2.Bring that line straight down the side.
3.line up the center of the protractor (90* mark) on the line you just drew.
4.Mark where the angle is to be (ie, a mark at the 15*, 12*, etc)
5.Connect from the first line to the mark you just made.

Should look something like this:




--------------------------------------------------------------
Cutting out the joint with the jig

A.Materials.


B.How to set it up with the saw:


1.Bring up the blade to a proper height.
2.Attach the neck blank to the jig via tape.
3.You then line up the blade with the line you drew earlier.
4.Bring the guide over so that the jig can ride against it.
5.Power up and make the cut

Joint after being cut out:





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Old 01-02-2010, 12:30 AM   #4
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IV. Style one

1.Glue one a piece of properly thicknessed wood:


2. Cut and plane it flat with the neck:


V.Style two
1.Take your cutoff and clamp it to the top of the cut joint. Then plane them together until they are perfectly in line with each other (black line shows what i mean)


2.Position and glue the cut off like so: (note that where you glue it affects the thickness of the headstock)


3.Cut off excess wood, and plane things smooth.
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Old 01-02-2010, 12:32 AM   #5
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VI. Final Steps

1.We then cut out ears for the head stock, and glue those on:



2.After it dries, plane it even, and sand it down. The cut out your headstock:




3.Finished Headstock:

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Old 01-02-2010, 12:32 AM   #6
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*For future use and expansion, FAQ?*
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Old 01-02-2010, 01:04 AM   #7
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looks good, bobby
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Old 01-02-2010, 01:07 AM   #8
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Thanks. It's alright. I need to redo some pics on my next scarf joint. I just hope this is easy to follow and understand.
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Old 01-02-2010, 01:10 AM   #9
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yeah.
i wonder if this could be used on a bandsaw?
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Old 01-02-2010, 01:11 AM   #10
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The Jig? yea. You can get a fence for them like the one i use on my table saw. You could also free hand it, and just plane it flat.
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Old 01-02-2010, 01:34 AM   #11
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what is a scarf joint?
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Old 01-02-2010, 01:36 AM   #12
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Post 4, picture 2.

That is a scarf joint from the side.
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Old 01-02-2010, 01:38 AM   #13
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I wish this was here befoe my dumbass teacher/bandsaw/scarf joint incident xD
Nice one Bobbo.
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Old 01-02-2010, 01:47 AM   #14
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^ I agree with you. Like i said in the beginning, it works great for my setup. Many people were confused after that step, which is why i did this. The process can easily lead to different jigs and setups for each persons own tools. I merely was showing mine.
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Old 01-02-2010, 02:07 AM   #15
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I will agree. I fear even my small table saw. I've had a kickback or two, and that's enough to teach you a lesson. I've never had a issue with this jig though, thankfully.
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Old 01-02-2010, 04:17 AM   #16
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Nice tutorial. I use a jig I made in about 10 minutes from some scrap ply, with a router. It looks like this;

With that you dont have to cut it very well since you smooth it off with the router afterwards. I cut mine roughly by hand, and I also did it Ibanez style, so you can see the joint on the back of the neck after its shaped.
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Old 01-02-2010, 05:02 AM   #17
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I think there is about 500 ways to do a scarf joint. This seems to be a good one, if you've got a decent table saw to cut something that tall. Mine can't.

I use a router jig, I have to do a scarf joint soon on this 6 stringer, maybe I'll send you something and you can shove it in here.
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Old 01-02-2010, 12:11 PM   #18
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Phil, i can't see your picture, but i know what your talking about (i think)
It holds the neck at whatever degrees, and then you take that to a table router and rout till it's flat. I saw it on PG. I don't have a router table but i want to try it

That said, i don't do many scarfs anyway.


Sounds good ohspyro, and my table saw cuts up to 3-1/4". It's just enough to resaw fretboard blanks. Cant do much else with it but cut up neck lams.
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Old 01-02-2010, 12:27 PM   #19
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went ahead and put this in the hub bobbert.
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Old 01-02-2010, 08:16 PM   #20
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Quote:
Originally Posted by metalwarrior40
Phil, i can't see your picture, but i know what your talking about (i think)
It holds the neck at whatever degrees, and then you take that to a table router and rout till it's flat. I saw it on PG. I don't have a router table but i want to try it

That said, i don't do many scarfs anyway.


Sounds good ohspyro, and my table saw cuts up to 3-1/4". It's just enough to resaw fretboard blanks. Cant do much else with it but cut up neck lams.

Yeah, I dont know why the pic isnt there. I dont use a table router though, you just need to make a base for the router thats big enough to not fall into the jig. Its really easy and the joints are perfect.
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