In article .net, I
Love Lucy wrote:

If I could learn to sharpen things, it would
be a great help as I noticed my tin snips are loose and dull and my bulb
planters I can't get in the ground and my one shovel which is flat that
I like, also my tile spades, all could use a sharpening.

Start he

http://www.leevalley.com/wood/page.aspx?c=1&p=32991&cat=1,43072,43091

A dull tool is a lot more dangerous than a sharp tool.