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Originally Posted by whiskey02
Ray
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05-21-2022 08:35 PM
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Originally Posted by whiskey02
There is another factor to consider when to change strings and that is the issue of fret wear. Do corroded strings accelerate fret wear? Most plain strings are tin plated, some TI's are brass/copper plated, and some (all?) RotoSound's are possibly nickel plated - the package says NP 011, NP 014, NP 018. Tin is a fairly soft metal and easy on the frets. When the tin plating has "corroded off" to the point where you have very hard music wire grade steel digging into the frets do you then have accelerated fret wear? I've noticed in my experience that the frets wear out under the 3 plain strings and essentially never under the 3 wound strings.
There is also the question that the tin plating can wear away without the corrosion simply by the action of the soft tin making repeated contact, either point contact or sliding contact, against the much harder frets. Again the result is very hard steel digging into the frets. So once the soft tin has worn away is that a good time to change at least the plain strings? And how to know?
I placed a dental mirror under the 3 plain strings. The tension of the strings holds the mirror in place. Then with a bicycle headlamp in my right hand and a 10X jeweller's loupe in my left hand I examined the wear pattern on the underside of the strings. Unfortunately I don't have the special photographic equipment to do such close-up photography so a verbal description will have to do for now. I saw an oval and very brightly polished and white-ish wear pattern with radial (at right angles to the string - not along the string) scratches in the polished wear pattern. I would guess then that the plating has not worn away because the plain steel would be a darker color and the radial scratches would have to be from the frets since the frets are a much harder metal than the plating. Those scratches also wouldn't have been in the steel because the steel is much harder than the frets.
So my conclusion then is that the plating actually holds up very well. There is a caveat to this conclusion in that since these are RotoSound's the plating could be nickel which would wear much better than tin. Perhaps some forum members, who know for sure that they have tin plating, and also those who have TI strings with the brass/copper plating, would be willing to repeat my experiment and report their observations.
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You can make you stings last longer. Wash your hands before playing; clean your strings after playing. If your sweat corrodes strings, probably you are not eating enough fruit and vegetables.
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Although it’s also protection against corrosion, I think plating is done more for lubricity than hardness. Tin, indium, and a few other relatively soft metals are commonly plated as surface lubricants. I assume gold has a similar effect, but I couldn’t find any info on that use.
The plating layer is very thin, and it’s held to the base metal by ionic bonds. It doesn’t wear down as easily as a thicker layer would because it’s more difficult to pull the thin layer off the base than it is to wear off the surface of a thicker layer of soft metal. The bonds to the base are stronger than the intermolecular bonds within the plating material.
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Originally Posted by nevershouldhavesoldit
2. I did some research and found that virtually all of these plain strings are tin plated. I haven't been able to find any string manufacturer who makes his own wire.* They all buy from an outside wire maker. Mapes is one of the major wire suppliers and they use tin plating for what they call "core wire". Although you can special order either 2% or 8% nickel plated plain wire. I have written to RotoSound and asked them whether they use nickel plated or tin plated wire. I will report here when or if they reply. TI makes a brass plated plain string, but also makes a tin plated plain string and adds a capital letter "T" to the product number to indicate that it is tin plated.
* D'Addario comes close. They buy a thick high strength wire and then draw it down to a thinner wire through a diamond die. They use that "drawn down" wire for their XT series of strings.
Cheers - Avery Roberts
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Originally Posted by Avery Roberts
Plain strings suffer from many failings. They oxidize. They become brittle from continued flexion, through a process called work hardening. This is why a coat hanger breaks if you bend it back and forth at the same point. And if the string is bent over a hard, relatively sharp edge like the back of a TOM bridge, the baseplate of a body-through bridge/TP, a sharp rim on a tuning peg hole, a rough spot or a burr, the microflexion at that point of contact becomes a stress riser in the string that probably affects tone and intonation before its inevitable breakage at that spot. Cheap or poorly chosen / designed / finished / installed hardware is a common cause of broken strings.
If you mean lose its tone, I don’t think anyone knows for sure what causes this. Remember that a string on a guitar is basically the spring in an oscillating system. Oxidation can alter the characteristics of a spring, as can any change in its shape. Strings are inelastic in many ways, so they deform from tension, vibration, plucking etc. Both tone and intonation depend on uniformity of the thickness of a string throughout its length. Because the metal is not perfectly and consistently dense, constant pulling and vibration elongate it and cause irregularities in cross sectional shape and diameter. Even progressive microscopic variation in diameter and deviation from perfect roundness probably affect tone, longevity, and integrity of plain strings much more than wound ones.
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Originally Posted by nevershouldhavesoldit
So the answer to the original poster's question is then somewhat unspecific. There is no set schedule that can be predicted. You have to change them when they no longer do the job, and "when they no longer do the job" is basically defined by the user's tolerance and judgement.
Cheers and again thank you for your reply - Avery Roberts
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Originally Posted by Christian Miller
I could change them out I guess, but why? I am not looking for a bright sound. They are warm and mellow and stay in tune.
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The longer they stay on, the greater the thunk
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OP, if you like a lively sound but still want to play flatwounds, you should try La Bellas next time
However, don't be afraid of trying round wound strings.
Like others have said, flats really do last longer. A big problem for your bronze strings is that sweat and grime get stuck in the ridges of the wound strings. I can only assume that the sweat being stuck between alloys like that accelerates the deterioration of the string. Some manufacturers attempt to remedy this by various variations of the same principle, coating the string with a thin film. If you want a really lively roundwound string, try out the brand new D'Addario XS strings.
If you like the dullness (or as we say here, "thunk") of a flatwound, give all the major brands a try. I thought the differences the flatwound strings supposedly would have were greatly exaggerated, but I was wrong.
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