LOL! Never mind! While searching for parts I discovered we can buy a premade unit using the same identical coil online! You can get it on Amazon for 15 bucks! Duhhhhh. Me stupid. LOL
All that is required is an adjustable 5v to 12v DC power supply which I am sure could be purchased already assembled. Sometimes I overthink things. LOL
Link please? :D
Nevermind, I think I found it:
Rig a foot-switch into the control circuit (along with the recommended ammeter) and you've got yourself a pretty cool tool which should last a long time.
Edited by Myc, 05 October 2019 - 01:50 PM.