"Roy" wrote in message
...

Would heavy fishing line work just as well?...some of that is quite
strong.

Not likely. Makers of monofilament fishing line strive to make it as
thin as possible for unit strength. Trimmers work best with the
thickest mono the machine can use. (Fishing line is also smooth:
thick mono marketed for trimmers is ribbed which helps it last
longer.)

--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)