forget what i said about buying the materials myself, sorry.
the fact is i bought it in a magic shop, the shop claims that they import their goods directly from T11, so i believe in their quality. Don't get me wrong, the quality of the goods is good but for static, they just give me one gimmick, cheaper though. That's why i don't know that the dvd should come with extra thread. I'm sorry that my question is confusing again.
So, how do you avoid breaking the gimmick? Maybe i pushed the card in too heavily.