[Note crossposted to uk.d-i-y,uk.rec.gardening]

I have an old 28cc McCulloch Strimmer (without brushcutter attachment)
and I'm getting really tired of having to replace the line, and the
'bump feed' has never worked since day one so I'm forever having to
stop to feed out more line from the spool.

So, what's to stop me (other than for safety reasons) from replacing
the plastic line with say, stout steel wire?

Pros & Cons?