Just a tip on ignition coil jacobs ladders. I have made a few in the past, but have had many prolems getting the arc to rise reliably. I tried keeping the ires completely straight, putting it in an enclosure, and still not very good results. If possible, try incorporate 2 ignitions coils into your circuit, otherwise your arc isnt hot enough, and wont rise properly. I just recently got a neon sign transformer, makes awesome jacobs ladders! Whereabouts in AU do you live?