Can you needle felt with a sewing needle?

No, you cannot effectively needle felt with a sewing needle. Needle felting requires a special barbed needle designed to tangle and mat the fibers together, while a standard sewing needle is smooth and not suitable for this purpose. Using a sewing needle will not produce the desired felting effect and could damage the wool fibers. For successful needle felting, it's essential to use the correct type of felting needle.