Re: [mowbot] cutting

Dominic Peterson (d.peterson nospam at
Wed, 25 Sep 1996 17:03:02 +1000 (EST)

>> Dave Everett <Deverett nospam at> wrote:
>> What about opposed blades, like scissors or hedge trimmers? Or Monty's
>> idea of a comb with a rotating disk of blades underneath?
>I tried a hedge trimmer about 3 months ago when another roboticist I
>know was thinking of using one on a robot mower. The results were no
>good, the blades just bent, and at the very best it tore a few grass
>blades and looked terrible. I tried keeping the blades closer,
>sharpening etc. That is why I looked at how the normal mower blades

I think the problem here is that a hedge trimmer was designed (hopefully)
to trim hedges and not cut lawns so the sizes/tolerances etc are all wrong.
See my previous post for some "off-the-top-of-my-head" dimensions for a
comb type cutter.

Dominic Peterson Email: d.peterson nospam at
(c) 1996 - Copyright remains with the author unless explicitly stated
-- All opinions are mine and do not reflect those of the University --