Colin North wrote:
I would be very interested to know the reasons.
For using traditional fret wire? There really aren't many reasons for me personally, but I can think of several others may have.
For large manufacturers, cost is a big one. A dollar or two per guitar may not mean mean much to the small builder, but if the purchasing department of a large manufacturer that buys a freight container at a time sees costs go up 30% for stainless or perhaps double for EVO, that's a big cost in terms of total annual budget, and without enough demand to justify it on a broad scale.
There's also ease of manufacturing. I recall a quote from Bob Taylor years back regarding the softer wire they used as simply being more cooperative with their fast-paced manufacturing. Harder wires would have required changes in tooling and procedure to get them reliably and uniformly seated, whereas softer wires would just mush in to place and stay there. Again, not a problem for most of us, but we're not worried about stopping and retooling a line that spits out hundreds of fretted necks a day.
Then there's the issue of market demand. For every thousand guitars sold today, from student to boutique, I doubt there will even be 100 that will see enough playing to wear the frets significantly in the first 10 years of ownership. The small percentage who do play a lot can upgrade to a harder wire when it comes time for their first refret - an aftermarket option for the relatively small numbers of owners who would benefit, while the wear rate of nickel wire is acceptable for most players.
Then there's the issue of wear not being the only reason frets may need leveling and dressing. I would say we see as many or more cases that need leveling not because of wear, but rather other distortions along the neck. Nearly every Fender ever made needs the kickup at the upper frets leveled out after settling a few years under tension, and this would be much more a pain if they came factory equipped with stainless or EVO. If frets have a good chance at needing leveling after manufacture anyway, whether they suffer any wear or not, then any benefits from stainless or EVO are effectively wiped out. So I'm actually glad factory instruments don't use harder wire, because it would typically go to waste and often need (a much more difficult) dressing in short time anyway.
Then of course there's the fact that stainless and EVO wires still wear, just at a bit slower rate (we have one client who can blow through a set of stainless frets in under a year, which is better than the 6 months it took him to destroy a set of nickel frets). So it's not as though it's a perfect permanent solution, just a sliding of the scale toward less frequent service, but at a higher cost when service is eventually needed.
For small or high end builders who build on a smaller scale (cost less of a concern), focus on quality of installation more than speed (ease of installation less concern), with more intentional construction for stability and better seasoned woods (board shifting and warping less concern), and cater to clients who are more serious players and log more hours on the frets (increased wear resistance brings meaningful benefit), I don't think many of these arguments in favor of nickel wire apply as much. In a larger context of nickel being the default for manufacturing though, I think it does make a lot of sense.