I'm thinking if fire goes in one end and comes ot the other, it will light a cannon.
To avoid paying significant money however, there are the "scotch tape" and "saturated cotton string" home made fuses.
Scotch tape burns really fast, cotton string burns slower... all depends on how much time delay you want.
I love both, and only use commercial fuse for my smaller mini's that don't have a .200 hole.
But, again, if it works, it works.