What is the purpose of different needle felting needles? For needle felting there are different types of needle points and different sizes to choose from. How do you select the right ones/what do they do?
Here is a Felting Needle Chart, via Paradise Fibers, which describes each needle type, gauge, blade style, fiber type, and uses:



Additionally, here is a very helpful YouTube reviewing the types of Felting Needles, demonstrating their various uses, and mentioning safety when Felting.