Id really like to start making my own string but what exactly do i need. I am thinking everything i need is at Michael’s or any other craft store. I would like to experiment with poly/nylon blends. just lookin for the name on the package 
What do you need? Thread.
You mean overlock thread?
You can also look here: http://yoyoexpert.com/forums/index.php/topic,3197.0.html
Try the search function you’ll find lots on string
That is a type of thread. So yes, you can use overlock thread. You can use other types of thread as well.