Depending on your personal choice you can wrap the guides with nylon thread or silk.
The biggest difference between nylon thread and silk is that silk becomes translucent/ nearly invisible when applying epoxy finish to it.
For sure also nylon thread is changing its color, white ones is also becoming nearly translucent, but not invisible and the colored ones have the tendency to get darker.
If you don't know whether you like the translucent wraps or you don't know how your thread will change color, you should do some tests on your blank. A good place for such tests is the butt section of your rod blank in the area where the reel seat and grip will be placed. There you can do test wraps and cover them with finish. In the end the reel seat and grip will cover everything so nothing of your tests is visible.
Before I start I want to point out that this is the way I have learned it and I'm not saying this is the best way for wrapping the guides. There are for sure several other methods of how to start a wrap and how to wrap the guides at all, but until now I had no negative experience with it.
First of all we attach the thread to the blank with a piece of tape on the right or left side of our guide.
Then we start spinning the blank slowly and move our thread over the guide to the point where our wraps should start.
