Black Shuck wrote

"........ I when I come to use the strimmer int he garden, I spend more time
taking it apart to get some more line, than I do strimming. It would be
quicker using scissors .........."

You don't say what sort of strimmer you use.
You don't say what you are trying to cut either, but I would try getting
heavier line, also sounds as if you don't wind your line tight enough onto
the spool.
With the better machines you can get a head that takes Nylon blades, these
could be better for you if your machine will take the head.

--
David Hill
Abacus nurseries
www.abacus-nurseries.co.uk