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sam2 said:I have used aircraft safety wire, ( stainless steel) its cheap and comes in rolls. https://www.aircraftspruce.com/catalog/appages/safetywire.php
I have used it to drop M-80's and launch rockets from R/C aircraft.
Just used a nine volt battery , a micro switch and two leads ending in alligator clips on the ends of the wire wraped around the fuse. Works every time!
I have also used it for fireworks displays. I used a 12volt car battery and
push button switches. Thats it. I use the .032 size wire.
sam