Other Ways to Build a Flat Spiral Spring

Hello

today there are tutorials to build flat springs sipralé in a way (Ø, curve (helix and spiral), bossing/blayed, etc...)

But I would like to know if it would be possible to first draw the inner loop and the outer loop in position and then to join in a spiral these 2 loops specifying the number of revolutions.

Friendly.

Syrius