If I reuse yarn that has been previously knitted and blocked, can I use it with yarn from the same skein that was not used? Can I expect the brand new and previously used yarn to behave the same so that I get the same gauge? I’m wondering because I’ve been making gauge swatches for a project and I think I won’t have enough yarn for the project by the time I’m done with the swatches. So I want to know if I can frog the swatches and use them along with the new yarn, even though the swatches been washed and blocked. I know now that I should buy an extra ball of yarn for making swatches!