No worries man. You'll get there if you want to. But for if/when you do get there. Corrugating wire serves 2 purposes.
1) Aesthetics: no explanation needed. Pictures above for reference.
2) Getting wider cores without slamming the resistance into the ground. Say I want to do a supper wide build for one reason or another. But also want a reasonable resistance. I can use corrugated wire to take up a bunch of space inside while using less metal. You can reasonably take up 1mm worth of space with a single piece of ribbon. Essentially getting the look of a 12 ply ribbon core with only 3 pieces of ribbon.
Here's an example: I used 7 pieces of ribbon, the middle being corrugated, for what would have taken at least 15. That is a HUGE save on resistance.
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