One of the keys to a smooth sewing project is choosing the right sewing machine needle for your project. As with hand sewing needles, machine needles come in different thicknesses and points each suitable for a different kind of fabric or thread. The shank of the needle will be flat on one side. Check your machine manual to see how to insert your needle.
The size of sewing machine needles can seem a little bit weird. Basically there are two numbers; one American size and one European (example 14/90… US/EU). The needles get finer as the size number gets smaller. So a 10/70 would be finer than a 14/90. There are a whole bunch of different kinds of sewing machine needles, but we’ll get into that later.