On May 23, 9:46 pm, "badgolferman"
wrote:
I am considering trying out one of those weed whacker head attachments
that replaces the string. I'm sure you have seen those heads that have
two or three nylon/plastic serrated things that do the cutting instead
of the string.

Has anyone used those and do they work well? Obviously they will trim
weeds, but how do they work on edging and do they mar siding finish?

I know the style you mean. It looks like a propeller except the
blades are hinged so that they fold back when they meet a fixed
object. My Stihl trimmer came with one so I have tried it. It is not
good for edging. Edging means trimming the grass where it edges an
object like a curb, tree or any fixed object. Those plastic blades,
even though they are hinged, will not stand up long to being bumped
against a fixed object. The blades can be easily replaced but are
more expensive than string.

That type of blade is designed to remove larger weeds in an open
area. They will damage your siding so keep your distance if you give
it a try.
Since it's edging that you need to do then an devoted edger would be
the best choice. A line trimmer is what is used if yu don't have an
edger.