Is there a maximum for coils, craft time redution?

[Soju-VB]

And maybe this chart

Power vs Spark Question (for a Boundless Pro to answer)

I only own advanced coils, so I can’t confirm how much per 100 power, only per 300 power. I have a table (percentage in relation to the 0 coil cost) for the refined titanium mass craft example: Adv. Coils % of Total Time (seconds) Spark 0 100.00% 3000 20000 1 76.62% 2298 15323 2 69.69% 2090 13938 3 64.05% 1921 12809 4 59.51% 1785 11902 5 55.94% 1678 11187 6 53.17% 1595 10633 7 51.08% 1532 10216 8 49.55% 1486 9909 9 48.47% 1453 9693 10 47.73% 1431 9546 11 47.26% 14…