DISCLAIMER! This method damatically changes the tone and isn't reversible. If you want to try it - be shure you won't regret much about throwing away a set of strings. Testing is still on. I wanted to try coated strings, but didn't want to spend much, so I decided to coat one of my used sets. I used acrylic sealing dissolved in water (1:3 or maybe 1:5 ratio). Applied 3 thick coats (letting each one dry for about an hour). The first thing I noticed is that the strings became somewhat sticky. Then, when I took 'em off the hanger - they became less flexible. I installed a D string on my bass and was immediately astonished with the tone. I've never heard such a dead string! But I definetly liked the tone. No string buzz, very nice mids. The sound is nothing like regular roundwounds. I even began to doubt the string was made of metal . Now I'm going to try this trick with another used set applying less sealing. I feel I'm on the right way. I'm going to call this "The Moonlight Technology".