Home Made 15KV Capacitor

I wanted to put a spark into a oscillator circuit I had built. I did not have any capacitors to charge and offer a time delayed spark, so I built one.
Using some items around my home I fashioned a capacitor using some plastic sheets and two sheets of aluminium a couple of pieces of wire some tape and we have a capacitor. 7.5nF and able to handle around 15 kilo volts. My circuit is around 25 to 30 kilo volts so I knew the capacitor would not last long before electrons would be basting holes through its dielectric.
I made a video, click the link below to take a look.