Tuesday, August 16, 2011

Stringing (or re-stringing) a guitar


There are many ways to string a guitar. After twenty-five years of replacing strings on all manner of steel-string guitars, this is the method that I’ve settled on. There are, of course, other methods, and you are more than welcome to try them out. For this blog post, I will be stringing a Fender Stratocaster, but this method works for pretty much all steel-string guitars, both electric and acoustic. That said, there are some locking tuners or split shaft tuners that should be strung in a different way. For that reason, I should state that the following instructions are intended for standard tuners. Remember that if you have a 3-a-side headstock (there are three tuners on each side instead of six on one side), you will have to string the G, B and high (thin) E strings in the opposite direction to what is shown in this post.

Firstly, connect the ball end of the string to (or through) the bridge of the guitar (I usually start with the low (thick) E-string. Obviously this step varies enormously, depending on the type of guitar you are stringing up, but it’s usually pretty simple. I plan to put a post up soon specifically talking about acoustic guitars and their fiddly bridge pins, but in the meantime I will have to assume you can handle this part.

Rotate the tuner to a position where the hole that the string passes through is perpendicular to the neck. Then feed the string through the hole in the tuner, from the center of the headstock to outside of the headstock, as shown here:


Continue to pull the string through the tuner, as described above, but leave enough slack that you can raise the string off the fretboard by about 3 or 4 inches (75 – 100 mm). As a general rule, the thicker strings don’t require quite as much height here, so let’s go for 3 inches for the thick E-string, gradually moving to 4 inches for the thin E-string.


Pull the string back on itself, as shown here:


Feed the string under itself like this:


Now pull the string back in the other direction over the top of itself, being careful to keep tension on the fretboard end of the string using your other (probably right) hand. This tension is important for two reasons. Firstly, it will keep the ball end of the string tight against the bridge so you don't get any surprises once you start tuning up. Secondly, it will give you a nice tight "knot" where the string tightens over on itself at the tuning peg. If this is slack in any way, you may end up with some string slippage when you are not expecting it. There's a real trick to keeping tension at both ends of the string here (unless you have three hands), but I find that pressing down with my (right) thumb on the string just above the nut, while pulling UP on the string with the rest of my (right) fingers will get the job done.


While still maintaining tension with your right hand, rotate the tuner in an anticlockwise (counter clockwise) direction to start tightening up the string. Before you tighten the string to pitch, make sure it goes under any string retainers, etc. In some exceptional cases, you may actually have to feed the strings through the string retainers before they get to the tuners (you may be able to get around this by loosening the retainer a bit then tightening it back down once the string is under it).

Once the string is tuned to pitch, grab it and pull it up a bit to stretch it. You can do this a few times, but be careful not to over-do it, risking string breakage (especially for the thinner strings).


Cut the string ends to leave about half an inch (12-13 mm) sticking out. Alternatively, you can just cut them as close to the tuners as you can (a lot of pros do this), in which case you can skip the next step. I prefer the method I use because I have a couple of small children and prefer not to have any sharp ends, even if they are mostly recessed (the strings, not the kids).



Now, using some pliers, fold the end of the string in half so that you do not have any sharp ends.



And that’s you done. You should find that this method will prevent string slippage and help to keep your guitar as in tune as possible.

As usual, feel free to ask any questions or leave any comments below.

Monday, August 8, 2011

Setting up or adjusting a Fender Stratocaster tremolo


Today's blog post deals with setting up a Stratocaster tremolo unit only. Everything else related to setting up the saddles, etc., can be found in the "How to set up an electric guitar" post here: http://diystrat.blogspot.com/2011/03/how-to-set-up-electric-guitar.html. If you’re going to adjust both the tremolo and the saddles, then do the tremolo setup (this post) first.


Let’s have a look at the Fender Stratocaster tremolo (also known as the whammy bar or the vibrato, and often misspelled as "tremelo"), as originally patented by Leo himself (as with all images, click on the picture for a bigger version):



It’s really quite a simple mechanism, engineering-wise. Looking at it from the side (FIG.2) we can see that it pivots on the screws that hold it to the top of the guitar body (the screws are marked "16" in the patent drawings). The tension from the guitar strings pulls the unit forward, but this tension is counter-balanced by the springs hidden below the unit (found under the cover at the back of the guitar), hence “floating” the tremolo unit. This is where you, the player, come in. To lower the pitch of the note(s) being played, push the tremolo arm towards the guitar body, thus adding to the string tension. Alternatively, pull the tremolo arm away from the guitar body to add to the spring tension and increase the pitch.

For such a simple mechanism, it really shouldn’t be difficult to set up. Unfortunately, there are many reasons why these are famous last words. One of the problems is that not everyone uses a tremolo in the same way. Some people like to both decrease AND increase the pitch, whereas others prefer to just lower it. Some want the tremolo to move really easily, while others prefer it to be quite stiff, so that it doesn’t move unintentionally (either from leaning on it accidentally, or even from the increased string tension caused by bending strings).

Another problem is that not everyone uses the same string gauge, so a tremolo unit that might be perfectly set up for light-gauge strings will probably not be set up well for medium or heavy gauge strings. Lastly, the starting position of the tremolo unit is a bit of a personal choice. Some people (usually the ones that only want to lower the pitch, or even not use the tremolo at all) prefer to have the tremolo unit sitting flush against the body of the guitar, while others prefer a gap, leaving enough room to pull pack on the tremolo arm, increasing the pitch of the note(s) being played.

Taking all of the above into account, this post will take you through a typical setup for an average player who likes to both raise and lower the pitch and uses fairly standard strings. You can, of course, feel free to adjust this setup to your liking.

One thing to mention here is that there are two common Strat tremolo types. One uses six small screws to attach the tremolo to the top of the guitar body, while the other style uses two bigger screws.

Vintage-style, or "synchronized" tremolo (six pivot screws):



American Series, or two-pivot bridge (two pivot screws):



The setup for both of these styles is almost the same, with the exception of step 5 (below), which will be clearly defined when the time comes. Here are the steps we will go through to set up the tremolo:

1. Remove tremolo arm
2. Remove back cover
3. Remove strings
4. Remove springs
5. Adjust pivot screws
6. Re-attach springs
7. Restring guitar
8. Screw in the tremolo arm
9. Adjust claw
10. Replace back cover.


Remove tremolo arm

Simply unscrew the arm in an anti-clockwise (counter clockwise) direction until it comes out. Be careful not to let it fall onto the surface of your guitar and scratch it.



Remove the back cover

Place your guitar face down on a nice soft surface, unscrew the screws holding the back cover on, and remove the cover.



Remove strings

Remove all six strings. You should now be looking at something like this:



Remove springs

Note: If you have a two-screw tremolo, once you remove the springs from the back of the guitar, there is NOTHING holding your tremolo unit in place. Be careful not to let it fall out or otherwise damage either the tremolo unit or the guitar.

Place your guitar face down and carefully remove the springs. You may have anywhere from two to five springs in there, depending on how it was previously set up. There are various different methods for removing these, but with the strings removed from the front of the guitar, you will probably be able to remove the springs by hand. Just grab them near the claw end, push the spring towards the claw, and lift out. If you’re finding this a bit hard, feel free to loosen the screws holding the claw in place a little. That should give you enough slack to get them off, and will make them easier to get back on later. Alternative methods involve screwdrivers, pliers or special hooks. If you decide to use any of these tools instead of your hand, do be careful not to slip and scratch your guitar.



Adjust pivot screws (two screw model)

Note: If you like (I recommend this), you can take this opportunity to remove both pivot screws and add a little Vaseline to the threads before reinstalling them. Add a little Vaseline to the points where the tremolo unit pivots on these screws too while you have this opportunity. The Vaseline adds a little bit of lubrication, helping things to move more smoothly, and also helps to minimise strange pinging noises when you move the tremolo.

Have a look from the side of your guitar to see how the tremolo unit is sitting against your guitar top. It will hopefully be sitting flush, but if not, adjust each of the pivot screws until it does. Remember that there is currently nothing holding your tremolo in place at this point, so you may have to push it forward with your hand. Alternatively, leave ONE SPRING in the centre position to hold the tremolo unit in place. Unlike the six screw tremolo, the two-screw model is pretty much idiot proof and you can often just screw both pivot screws all the way in without raising the tremolo unit off the surface of the guitar.



Adjust pivot screws (six screw model)

Have a look from the side of your guitar to see how the tremolo unit is sitting against your guitar top. It will hopefully be sitting flush, but if not, slacken each of the pivot screws until it does. Now slacken all the screws one turn more. Finally, tighten down the outer two screws only until they are just touching the top of the tremolo unit. The unit will now balance on these two screws, while the other four will be used solely to keep the unit in place.


Attach springs

Time to re-attach the springs at the back of the guitar. Use the same method as when you removed them, but add a little bit of Vaseline to the two ends of each spring first to lubricate the contact points just a bit. In general, three springs located in the centre and the two outer locations is the most common configuration for standard string gauges.



Just a few notes about springs (since I have your attention), as follows:

1. Not all springs are the same, so if you find that you only have two springs and want to increase to three by just buying a single new one, you could end up with mismatched ones. Better to buy three new ones.

2. If you are using three springs and are tempted to place the outer two springs at an angle so that they are not parallel to the centre spring, but rather taper towards it or away from it, this will end up giving you unevenly-matched springs, as the centre one will be shorter than the other two. Generally, I would say not to do this, but plenty of people are happy with this configuration and don't seem to have any problems. You're certainly not going to break your guitar by trying it, so feel free to give it a go.

3. More springs will give you a stiffer feel. If that’s what you want, then by all means feel free to try it out. Similarly, fewer springs will give you a bouncier feel.

4. Heavy strings might require more springs and lighter strings might only need two.



Restring the guitar

Restring your guitar in the normal way. I’ll be putting a blog post up about that in a few days if you’re unsure of the best way to do that. EDIT: Here it is - http://diystrat.blogspot.com/2011/08/stringing-guitar.html


Screw in the tremolo arm
We’re going to need the tremolo arm for the next step, so it’s a good idea to screw it back in now.


Adjust the claw until the tremolo unit is at the correct distance from the guitar body

This is quite possibly the most important step of the whole tremolo setup. The claw is the fine tuner that will leave your tremolo unit sitting in just the right place for optimal balance. Before adjusting it, make sure you tune your guitar to pitch. Use the tremolo a bit while you’re at it to make sure everything is loosened up, and keep doing this until the guitar stays in tune even after tremolo use. Now look at the side of the tremolo unit and measure how far off the surface of the guitar it is sitting at. Fender recommends that it sits at about 3.2 mm (1/8").



If it is sitting too high, then tighten the two screws holding the claw in place. Alternatively, if it is sitting too low, then loosen the screws a little. Each time you adjust the screws, you will need to re-check the guitar tuning and use the tremolo a bit, then re-measure the height. Once it consistently sits at 3.2 mm and the guitar is in tune, you’re done. Be prepared to take some time doing (and repeating) this step.



Replace back cover

Like it says, put the back cover back on and replace the screws.


Well that’s the tremolo unit set up and balanced nicely. For other setup tips, feel free to go to the setup post mentioned at the beginning of this one. Otherwise, feel free to ask any questions in the comments below.

Tuesday, June 14, 2011

Another DIY guitarist


I recently got back in touch with an old friend from the Basque Country. Back when I was living there and making my Strat, he was planning on making a Telecaster. We were both quite interested in making our own stomp boxes too, and we were both pretty new to the whole thing. We’ve both learned a lot since then.

I was very happy to learn that he completed his Telecaster (and another!) and has not only continued to make stomp boxes, but has made tube amps too.

His name is Raúl, and you can see some of his DIY guitar projects on his myspace page here: http://www.myspace.com/raulbrontes. The picture above is one of his Telecasters. Isn't it beautiful?

He’s also the lead singer and guitarist in the fantastic band, "The Brontës". There’s some information about them on Raúl’s page, but if you want to learn more you can go to The Brontës’ myspace page at http://www.myspace.com/thebrontes.

Keep up the good work, Raúl!

Wednesday, May 25, 2011

Building a quick Brian-May-style treble booster on Veroboard

It was a friend's 44th birthday a while back, so I decided to make a quick pedal for him.

I'd been wanting to try out a Brian May treble booster based pedal for a while, and I found this one at http://147pedals.blogspot.com/2010/11/simple-tone-control-brian-may-treble.html.


Veroboard is also known as stripboard or perf board, and looks something like this:


Whichever terminology you use, make sure you get a board with lines/strips of copper and NOT one that has each hole insulated from the next like this:


I like building circuits on Veroboard, since it’s simply a case of following the picture. You don’t even need to understand how circuits work (although it would obviously be helpful for trouble shooting).

Anyway, here are the simple steps to making a Veroboard pedal.

1. Cut your Veroboard to size (in my case 12x5, erm, holes).
EDIT: In hindsight it would have been better to make this 14x5 which would allow an extra hole either side of C1 to attach the wires to the tone switch. So learn from my mistake and make yours 14x5.

2. Now "cut" the tracks wherever you are instructed to do so (you are just cutting through the copper, not the whole board). In the case of this particular circuit, between the pins under R1, C1, R4, and R6. The result after cutting would look something like this:


3. Solder the components on. Note that the copper strips are on the underside of the board, and the soldering is just like when you get a pre-made circuit board. Here's what mine looks like after soldering. Please ignore the fact that I'd also added some cables before taking this photo.




4. Finally, you need to wire up the enclosure. This circuit was so simple that wiring up the enclosure was the hard bit. If you are unsure how to wire up a stomp box enclosure, then have a look at my blog post over here: http://diystrat.blogspot.com/2009/06/buhow-to-wire-up-stomp-box-effects.html

5. Here’s the finished result. I didn’t have any time to make the enclosure itself look good this time around. My apologies in advance for the silly name.








Veroboard is very cheap and there are a LOAD of good circuits out there that use it. Here's just one example of a site that has a few:
http://www.generalguitargadgets.com/richardo/perfboard/index.html

As you can see, the Veroboard layout is much easier to follow than trying to read a circuit diagram, kinda like reading guitar tabs when you can't read music.

Some of the projects don't even need you to cut any of the tracks.

This Brian-May-style treble booster was a very simple circuit to build and works extremely well. In fact I think I may build one for myself too.

Tuesday, March 1, 2011

How to set up an electric guitar

Setting up an electric guitar is not rocket science, but it is something that a lot of guitarists shy away from. True, if you do this wrong, you can make your guitar play badly, but if you learn to do it right, you could save yourself a lot of cash.

I should probably preface this by saying that today we are only going to do a basic setup. This is enough most of the time, but occasionally more is required, such as filing the nut, or doing some fretwork. If you want to set up a tremolo too, go to this post first: Setting Up or Adjusting a Stratocaster Tremolo

Also, if you're setting up a Les-Paul-style guitar, you might prefer to have a look at this blog post: http://diystrat.blogspot.com/2012/09/how-to-set-up-gibson-les-paul-style.html

So what does a basic setup involve? Let me break it down for you, as follows:
1. Checking and adjusting neck bow (how straight the neck is)
2. Checking and adjusting saddle height
3. Checking and adjusting the intonation (how far back or forward the saddles need to sit at the bridge to keep your guitar as in tune as possible no matter what fret you’re playing)

Those three steps will have a dramatic effect on your guitar and none of them are very difficult, or require particularly specialized or expensive tools. In this article, we will do this on a Fender Stratocaster, but the same rules apply for just about every electric guitar. In fact, most other guitars are even easier to set up. Here's today's patient:



1. Check and adjust neck bow (how straight the neck is)

Since we only want to check how straight the neck is, we need to isolate this aspect of the guitar. In other words we don’t want the height of the nut or the placement of the saddles to confuse us, so we take them out of the equation. Don’t worry; we’re not going to remove any of these components, just circumvent them.

I use a ruler to do this, but you can do it using only strings. I’ll describe both methods below.

Method A: Using a ruler

Get a ruler (or straightedge if you want to be all fancy) that is at least as long as the neck, but not so long that it reaches all the way from the nut to the saddles. If you can’t get one between these lengths, and are willing to sacrifice a ruler, get one that’s too long and cut it to length. Alternatively, you can just cut a little out of one edge so that you can still make full use of the other edge of the ruler.

Now lay the edge of the ruler along the frets (don’t rest it on top of the nut or the saddles).


Method B: Using the strings

First, put a capo on the first fret. This stops the nut from having any influence, say from being too high/low.


Next, hold down the low (thick) E string on the bridge side of the highest fret. This stops the saddles from having any influence.


No matter whether you used method A or B, you can now go about measuring the neck bow. This is done by measuring the string height (the gap between the ruler/string and the top of the fret) at about the 8th fret. There is a lot of debate over how straight a neck should be, and in fact it really is personal choice, but a height roughly the same as the thickness of a B string is a good starting point. Personally, I use a 0.012” feeler gauge to do this, but you could use a B string. Simply slide the feeler gauge/B string into the gap to see if it is too big/small.



If the gap is perfect, congratulations – you may now move on to step 2.

If the gap is too large, then you need to tighten the truss rod a little (similarly, if the gap is too small, you need to loosen the truss rod). Locate the adjustable end of the truss rod. On my guitar it is at the head of the guitar and uncovered.


On some Fender Strats, it is located at the other end of the neck. This is a pain, because every time you want to make an adjustment to the truss rod, you will need to loosen the strings, remove (or partially remove) the neck, adjust the truss rod, re-attach the neck and tighten up the strings again to check the neck bow.

Anyway, here’s how you adjust the truss rod. This must be done with the strings tuned to whatever pitch you usually use. If your neck is too bowed (the gap you just measured is too big), you tighten the truss rod by turning the Allen key (Allen wrench), screwdriver, or socket (the tool required depends on your guitar) clockwise. It is recommended that you only turn the tool a quarter turn (or even an eighth turn) at a time and then give the neck some time to settle. You will also need to make sure the strings are still properly tuned after each adjustment.

CAUTION: If you find that the truss rod is very difficult to turn, then stop now and take your guitar to the guitar shop. It may be that there is a problem with the neck or the truss rod and you may damage the guitar by forcing it. Believe me, you do not want to damage the truss rod.

If, instead of tightening the truss rod, you need to loosen it, do so by turning it anti-clockwise (counter-clockwise). Again, a quarter turn at a time. Once you have got the gap to 0.012” (or whatever gap you prefer), you will have finished this step. Feel free to remove the capo at this stage if it is attached.


2. Check and adjust the saddle height

Firstly check and, if necessary, adjust the low (thick) E string height. Do this by adjusting the height of the saddle on the bridge/tremolo. If you have a Stratocaster then this is done by screwing two little screws in or out. I recommend that you try to keep these two screws at the same height as each other, although some people would disagree with me.


The question here is how high to make the saddle. Well, this is personal choice. Find somewhere were the string doesn’t buzz on any fret from being too low, but low enough that you can play up and down the neck easily. There’s usually a sweet spot where you can just start to detect some buzzing and you can leave it just a tiny bit higher than that.

Now do the exact same procedure for the high (thin) E string.

There are two ways that you can go about adjusting the other strings.

Method one: Adjust each string the same way as you just adjusted the two E strings.

Method two: Use a radius gauge, as follows:

Lay a radius gauge across your strings, close to, but not touching, the saddles. Adjust the remaining strings only (A, D, G & B) until every string is just touching the radius gauge. Radius gauges can be bought from numerous sources, or you can make your own. Feel free to use Google at this point if you don’t know about radius gauges. Just make sure that you use a radius gauge that matches the neck of your guitar. Not all Strats have the same neck radius, so the best way is to rest a radius gauge on the neck of your guitar (with the strings removed if necessary) to find out which radius you should be using.

Incidentally, I use these snazzy radius gauges that can go either above or below the strings (below gives a slightly more accurate result, although the difference is arguable).






I got them from http://www.stewmac.com.

Please don’t take these measurements as the absolute final string height, but more as a good estimate. You can adjust them a little to your own personal tastes after this.

OK, that’s step 2 finished. Your guitar should be nice and playable now. However, it may not seem to stay in tune very well. That’s because the intonation might be off.


3. Check and adjust the intonation

The intonation here refers to the forward/backward position of the individual string saddles. By moving the saddles forwards or backwards, we are actually adjusting the length of the strings. Without going into too much detail, if the string is the wrong length, the positions of the frets will not be correct and the guitar will be out of tune on some of them. Adjusting the intonation is not difficult. All you need is a guitar tuner and a tool to move the saddles forwards or backwards.

Play an open low E string and make sure it is in tune (using the guitar tuner).


Now play the 12th fret of the low E string.


It should also be in tune. If it is too high, then you need to move the saddle back. This increases the length of the string. If the note is too low, then you need to move the saddle forwards. This decreases the length of the string.


Now check both the open and the 12th fret notes again. You’ll have to tune the open string again because by moving the saddle, the tension of the string will have changed and so will need to be retuned.

Once you have correctly moved the saddle so that both the open string and the 12th fret are in tune, you can move on to the A string. Repeat until all of the strings have been done.

That’s a basic setup done. Hopefully your guitar will now be easy to play and appear to be in tune no matter where you play the note. As I mentioned before, sometimes other work needs to be carried out on your guitar to make it play right, such as work on the nut, or a problem with one or more of the machine heads/tuners, but that’s for another day.

Also, if you want to set up the pickup height on your Strat, check out this post: http://diystrat.blogspot.com/2014/03/fender-stratocaster-pickup-height.html.