Step 1: Obtain materials
You then need a spring. The type of spring is crucial to obtaining the proper sound. I recommend this one from McMaster-Carr:
9665K54. The spring specs are 0.187" OD, 0.020 wire diameter, 20" length and type 302 stainless. Cheaper springs may work, but have not been tried in this diameter.
|You will need a vice, needle nose pliers, and a 15 foot tape measure. Lastly, you will need a pen with a decent point.|