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Thanks to the TCSS crew for help with the resistor maths. Learned a lot making these. What we need is a T-shaped connector for running LEDs in parallel. On/Off switch to two LEDs requires a splitter or Y/T-shaped connector. The same for the Negative leads going back to the battery. Found some work arounds but not ideal. Prefer connectors and crimping to soldering.

I cut small panels from a plastic tube and reinforced them with Worbla to make the raised switch boxes. Used my soldering iron and a dremel to cut holes just tight enough for the switches. After wiring the switches I used epoxy resin to attach the boxes to the hilts. I plan to use screws the next time, but this will do for now. Some small design flaws. Worked around them but we know better now.