My first 4 ply yarn and I'm amazed at what it does for consistency. There's still some thick and thin spots or overspun areas but wow, totally changed the game. : r/Handspinning
Super 4-Ply Bulky 100% Wool Rug Hooking/Punching Yarn – Maritime Family Fiber
4-Ply yarns, yarn weight conversion, and ply versus weight
West Yorkshire Spinners (WYS) Signature 4 ply Yarn - Multicolored – The Woolly Thistle