Making Shotgun Ejector and other Small Compression Springs
Intricate methods for crafting compression springs aren't necessary for this particular size and wire thickness.
When dealing with small-diameter music wire, I suggest selecting a steel rod that matches the desired inner diameter of the spring. While I've previously used elaborate screw-based jigs (which you can find tutorials for on YouTube), I've found that for small, narrow-diameter springs, a simpler approach works best. Secure one end of the wire to a steel bar held in a vise, then carefully wrap and attach the other end to a short piece of wood dowel (2-3 inches long, with a hole drilled through its center). Without using a jig or applying heat, picture the proper circular motion in your mind to keep the wire's tension fairly uniform. Gradually pull and wind the wire around the bar to the length you need. For easiest removal, work at the end of an upright, lubricated bar stock—I usually manage to twist it in a way that it catches and unwinds itself from the rod when turned.

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