That's a totally life saver if you like coils as much as I do - when I experiment I used copper directly from the coil. At the end of the experiment I usually scratch my head wondering how much wire was it really in there?! 'Cause if you don't know how much wire you used you cannot do one of 2 things (equally important):
- You cannot properly price a piece - you don't know what went it, how can you decide how much is worth it?!
- You cannot write a tutorial for that piece
But now I can (without unwrapping the experiment and measuring the wire, that's it) and you can too: