Same weight yarn is a different size?! I had to buy a different brand of yarn because I needed this color and when I stitched the squares together I noticed they are
WEBS Yarn Store Blog » Tuesday's Knitting Tip – Working with Multiple Strands of Yarn
How to Knit with Multiple Types of Yarn Tutorial - YouTube
Knitting with yarn held double — Louise Tilbrook Designs
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Yarn substitution at different weights — Jacqueline Cieslak
Double stranded knitting – What? Why? How? - 10 rows a day
Yarn substitution at different weights — Jacqueline Cieslak
What is double knitting yarn - Weight, ply and what to knit with it