Now that we have the 5^th string off of our Nylon String guitar, let's go about putting the new one on.   I will take it out of the package, and unwind it. The strings for nylon guitars are either going to be plastic, actual nylon, or they're going to be what they call the wound strings or the base strings. This 5^th string is a base string, and the base strings are metal wrapped around a silk core. You will be able to see the difference. A lot of manufacturers do this thing, where they have two different ends. One is normal, and the other has a sort of braided area, and that is to help tie it on to the Bridge.   I am going to take my normal area, and I am going to feed it through the hole at the backside, and pull it through. You want to be careful not to pull as quick as you can, because you can damage the string that way. I am going to get to the end here and leave myself about two, three inches to work with. If you are working with the wound string, one of these base strings, here is what you do. You take this end here, and you go underneath the longer part, and create a little hock, and then you feed it under this little loop you've made. And you're almost done. If you have a nylon string, one of these three, you have to go an additional time, maybe even three times, so that it's really wrapped around itself. This is the example, if it were a nylon string. But for the wrapped strings, you only need to do it once. You have to play with it a little bit. What you want to do is tuck it around to the back side of the bridge. And secure it into place, and then just gently pull on the string.   So, you might have to play with it a little bit, but you will able to get that tied on, and then we can go to the Headstock area. I am going to lay my string into the Nut here, and it helps if the hole in your roller is facing up here. The easiest way to do this, is to lay the string over the roller, and then come back the other side. I am going to do it again, and this time, I am going to come up from the hole on the bottom, and pull it out on the other side here. Then give it a tug here. So, I have just gone around the roller twice, and fed it through the hole. The easiest thing is just to go underneath the string, and wrap it around it. You can go two or there times. I am sort of braiding these together. Give it a little tug, and I can start tightening it up.   When the string is wound around the roller, all these little twist you've made will lock it into place. If I don't use my winder,  it's kind of slow-going. But, I am going to grab my string winder…  Here we go. When I have a decent amount of tension [Plucks the string while tightening it] on the string, I am going to stop winding it, and we can tune it up to pitch then.  

You can buy replacement bass strings. In fact, many nylon guitar players change their nylon “treble” strings about once for every 2 - 4 times for their basses. Bass strings tend to wear out a lot quicker.

This is a relatively new design for nylon string guitars. The idea is that each string will occupy 2 of the holes. 6 strings … 12 holes; that’s 2 per string. If you follow stringing pattern you can see on the old strings and figure out how to feed the strings through the appropriate holes.

If you can’t get the string to get around that edge of the bridge, you can just create extra twists instead. To do this, feed the string through the hole and come back around on it, going underneath the string at the original point of entry in the bridge as explained in out video. Then feed the string back through the loop you've created an extra time to make an extra loop as if you’re braiding the string on top of the bridge.