I recently purchased some SS 420 wire so I could build some TC coils. Being new to this I had no idea what I was buying, all I have bought before was fused Clapton wire. To the internet I went! I tried using a drill to twist some wire, total disaster! I'm sure if I tried again I could do it but it got me thinking. Back in the day when I was racing Motorcycles (Desert) I used to safety were my spokes and had a really cool set of wire twisting plyers... I went to my tool box and there they were! The coil pictured is 3 strands of wire twisted and wrapped 8/7 at 3.5 ID dual coils at 1.7 OHM.