"Tim Wescott" wrote in message
...
On 05/09/2011 04:10 PM, Wayne wrote:
My lawn mower blades get dinged up real good by sticks and small rocks.
Grinding them takes me a long time, 2 blades, 4 edges.
Is there any reason why I couldn't set up the angle in the mill
and clean them up with an end mill?
I would think this would be a lot faster.
I could always grind in the final edge.

If this isn't a good idea, then everyone should forget I asked a stupid
question.

I've seen someone here report on doing it just that way for commercial
mowers.

Given that the blades seem to be fairly soft (and that they need to be, as
one may not want one's blade to fracture),

Soft? I don't think *that* soft, and a super-TOUGH material.... holy
****.....

I think the op's complaint about grinding is precisely because these blades
ARE so tough!

Milling, I think, would be fine, but my lawnmover blades seem to have some
complex angles and twists.
But if you can set up your machine to do it, and it doesn't eat up yer end
mills, then it might be a good strategy.

Mebbe clamping the blade in a bench vise and having at it with a 4 1/2"
angle grinder would be effective, as well.
As time alluded, you don't need a chef's edge here.
--
EA


trying to get the World's
Sharpest Edge on one's lawn mower blade may just be a waste of time after
the first 100 blades of grass get cut.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at http://www.wescottdesign.com/actfes/actfes.html