[Closed] How much more use on this cassette then.....

taking photo's this morning (for a project entitled 'teeth'... just in case you're wondering..!)
and i noticed the burrs on the leading edge off said teeth...
(before you say it - i know this picture will indicate to some around here that i need pay more attention to 'detail' when cleaning - though it did thoroughly clean it all just 2 rides ago.....!)
[img][url= http://farm7.static.flickr.com/6007/5933291734_7837dd5958.jp g" target="_blank">http://farm7.static.flickr.com/6007/5933291734_7837dd5958.jp g"/> [/img][/url]
[url= http://www.flickr.com/photos/24817333@N00/5933291734/ ]DSC_2383.web[/url] by [url= http://www.flickr.com/people/24817333@N00/ ]chris1968[/url], on Flickr[/img]