how do i keep a flame constantly burning?

Question

im trying to light my katana on fire but after coating it in somthing flamable the flame goes out when i swing the sword.
i need an idea of what wont go out when i swing it.
or whats the stuff the flame twirlers in hawai put on the sticks?

Answer 1

Whatever it is, it's going to gunk up your katana, so you should think real hard about whether you want to sacrifice your katana in the name of flames.

Answer 2

have you tryed gasoline thats what I use when I want something in flames I would just be careful about how mutch you use