Original poster: "Kreso" <kreso.bukvic-at-kc.htnet.hr> Well i finished the coil today. I overdrived the nst to 67 mA. I tried using 33 nf mmc i can tune coil and get 8 cm sparks. When i tried 60 nf i cannot tune coil 2 cm arcs, then i tried LTR 90 nf mmc nothing only mm or so spark? What is going on?