Okay this too seems rather basic— but it is actually fairly important. In sewing doll clothes you will most likely ( at least you should be) be using fairly lightweight if not actually fine fabrics, as they make the best doll clothes. (Remember, I don’t write about play doll clothes– just about sewing heirloom quality doll clothes.) I never use anything in my machines for doll clothes except Schmetz Universal Needle — Slight ball point in size 70/10 which is a fairly fine needle. This works well on everything from fine silk to felt or velvet, and all weights in between including organdy, silks, satins, batistes and other fine cottons. This doesn’t mean you can’t use your machine for other things without changing needles— I use these for mending, sewing chair pads, or whatever I am doing, but after using them for heavier work, I will put in a new needle when going back to fine fabrics. If ever you are sewing and this needle pulls at the fabric or seems to make holes, it means the needle is dull and needs to be changed.