Well, I've attempted doing a blanket on this loom with the #4 Worsted Weight Yarn as suggested. I think the #5 works well on these pegs (7/16" 72 pegs). Don't really like how the blanket is forming, it seems that the #4 Worsted Weight Yarn is very light in weight and week on this Loom At the monment I'm working on a basket using T-Shirt Yarn on this Loom. I prefer using T-Shirt yarn over regular yarn. I will update my comment once I'm finish making the bakset with my T-Shirt Yarn.