If you do much of this guitar modifying or upgrading, sooner or later you’re going to need to make a hole bigger.
For example, if you replace some of the vintage-style tuners with more modern ones, there’s a good chance you’ll need to enlarge the tuner post hole in the headstock. This is actually one of the most common reasons for bigger holes. Moving from metric 'import' pots to sturdier CTS or Bourns is another common requirement for larger holes.
Now, you’ll be tempted just to take a drill bit, the size of your new tuner, and jam it in the smaller hole.
Guitar Tuner Upgrade Kit For 3+3 Headstocks (10mm Post Holes)
You can’t centre the bit properly, you see. And as soon as the flutes bite into the wood, it’ll generally snag or yank itself in crazy ways. Even if you manage to get all the way through, instead of a nice circular hole, it’ll be shaped like an abstract painting of an egg.
Because it starts with smaller sizes, you can usually find a size to fit your current (smaller) hole well. This helps to keep the bit centred as you drill.
Step drills are mostly intended for sheet metal work so they’re made for thin materials. This means the height of each step increment is sometimes too short to get all the way through thicker pieces of guitar.
Enlarging Vintage Tuner Holes
Some bits have larger steps and that might do the trick. Or, sometimes you can drill from each side of the hole and meet in the middle. That’s often enough to do the trick. If not, you’ll be left with a little in the middle that you can file out with a rat-tail file.
Or you can use a reamer to get rid of more of the remaining wood in the centre of the hole and follow that with a file to save a little work.
A reamer is sort of like a continuous step drill. It has cutting flutes like a drill bit. The best ones do not have flutes all the way around —instead, one half of their circumference is smooth and the other half has the cutting edges. This helps keep them centred in the hole (the ones you generally find in the hardware store have cutting edges all around and aren’t as ‘clean’ to use).
Pcs Guitar Tuning Pegs Buttons Plastic Machine Head Tuner Knobs Glazed Appearance For Folk Classical Guitars Mounting Hole Size (l X W) 3mm‑4mm (#2)
Because they’re tapered, on anything other than thin materials (say an archtop top), you’ll need to work from both ends of the hole and you’ll end up with a similar ‘hump in the middle’. Again, a thin round file will take care of that.
Stew Mac carries good reamers. Their Endpin Jack Reamer for instance is invaluable for enlarging acoustic endpin holes to accept a pickup output jack. They also have some reamers for bridge pins (useful because different pins have different tapers —one instance where you
I’d get some step drills, if I was you. You’ll find them massively useful for this sort of stuff and they’ll cover most bases. Wait to get a reamer until you know you need a reamer (you’ll know).If you’re looking to change the tuners on your guitar, you’re going to need to know what size drill bit to use. This can be a tricky process, as there are a few different factors to consider. In this article, we’ll walk you through everything you need to know in order to choose the right drill bit for the job. The first thing you’ll need to do is measure the old tuners. This will give you a good idea of what size drill bit you’ll need to use. Be sure to measure the width and the height of the tuners, as this will vary depending on the make and model of your guitar. Once you have the measurements of the old tuners, you’ll need to find a drill bit that is slightly larger. This will ensure that the new tuners will fit snugly in the holes. Be sure to check the size of the drill bit before you purchase it, as some bits are larger or smaller than others. Now that you have the right size drill bit, it’s time to start drilling. Be sure to drill slowly and carefully, as you don’t want to damage the guitar. Once you have the holes drilled, you can now screw in the new tuners. With these simple steps, you’ll have no trouble changing the tuners on your guitar. Be sure to take your time and measure everything carefully, and you’ll be playing with new tuners in no time.
Sting Sperzel Tuning Machine Sets
Wax can be used to grease the screws and a ruler can be used to align the tuners. Drill bits with a larger diameter tend to drift into the softer grain line, making your tuners appear crooked. My preference is for them to be slightly smaller than the screws, but not too small or I’ll have to hire a gorilla to do so for me.
On a standard vintage tuner, such as the Gotoh or Kluson 6, the hole diameter ranges from 11/32″ to 0.345″ or to 8.8mm. Modern MIA or MIM two-pin tuners have a 10-mm Tuner Hole. All MIM classic series, classic player, and road-worn models come with Tuner holes of 9.09 mm, so I assume the list extends to the current vintera line. As there will be a whopping 0.29mm gap in the current hole? Gotoh has probably realized that there is a gap in the market and has included 9.2mm bushes in their tuner sets. Some issues with Gotoh SD91s only having 8.8mm bushes can be attributed to their bulk supplier Allparts Tk 0880 being the same as the retail Gotoh packs. Some US Ebay sellers are now selling both sizes of the Gotohs.
Gotoh 9.3mm bushes were packaged in a box that included two sets of bushes and the tool. Only a heavy, traditional guitar pick and the strength of my thumb are required for me. This method has the potential to fail if it does not work. Because the distance between bores is too wide, tuners cannot be butted. The Gotohs are a better choice than me. The shafts cannot be recrushed, and the back is made of pot metal, so reattaching them is impossible. SD 91 HAPM are also known as Gotoh SD 91 HAPMs due to their smaller shaft. Despite the fact that stewmac’s dimensions are more precise, they are 6mm shorter than gotoh’s dimensions.
Holes Too Big For Tuning Keys
The traditional tuners are made of slotted roundhead screws, whereas the modern tuners are made of 10mm shafts. Each tuning peg hole is measured in the same way with a ruler, ensuring that the tuner fits perfectly with all instruments. The peg hole of a modern tuner should be 9/16″ diameter; however, if the guitar has a Gotoh or Gotoh-style tuner, it will fit. On a guitar with a traditional tuner, a 5/16′′ hole would not fit.
There is no definitive answer to this question as the size of the tuner hole on a fender guitar can vary depending on the model and year of manufacture. However, most fender tuner holes are approximately 3/8″ in diameter.
A standard Squier® Telecaster® tuning machine has a headstock hole of 10mm, which is a modern style. These machines usually have a single mount screw offset in one of several positions. Most tuning machines do not have mounting screws at all. The front end of each one has a nut that you must unscrew with a 10-mm hex wrench.
Guitar Tuner Tuning Pegs Key Machine Head Vintage Les Paul, Gold
The size of the hipshot tuner hole is important because it needs to be big enough for the string to fit through, but not so big that it is loose and wobbles around. If the hole is too small, the string will be tight and difficult to tune. If the hole is too big, the string will be loose and won’t stay in tune.Replacing older, (perhaps) less-reliable tuners with new, sealed modern units is a pretty common upgrade. However, sometimes players want to go the other way. Sometimes, they want the look and vibe of a vintage-looking set of tuners. And, I should mention –because the implication is there –these tuners are absolutely fine. There’s no real drawback of installing a quality ‘vintage-style’ set over a set of more ‘modern-looking’ tuners.
However, a major difference in design between these two broad tuner camps can make the change from modern to vintage more tricky.
I’m going to take a look at what’s involved in swapping out a set of newer Fender tuners for ones with a more vintage vibe and I’m going to split this over two parts.
Guitar Tuner Drill Jig
Modern tuners most often have a post diameter that‘s a little less than ¼” – it’s actually about 6mm. However, the construction of their bodies means they require a much bigger hole in the headstock. Modern tuners need a 10mm hole (0.394”).
So, swapping out those 10mm-hole tuners for hardware that expects an 8.75mm hole isn't going to work. The bushings will rattle around and the tuner shafts will not have anything to bear off under string tension and may deform. Not good.
And, to make matters worse, Fender’s newer tuners use a slightly bigger hole again.
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