So as a freelancer who takes pride in his equipment and would be embarrassed to turn up on site with a dull chain. And who also doesn't have the luxury of a workshop with a bench mounted vice or grinder I decided to purchase a Timberline chainsaw sharpening kit along with the carbide cutter 5/32, 3/16 and 7/32 to cover all my saws.   It arrived this morning so thought I'd give it a go on my 550 on which the chain was new on Sunday however rather dull by the end of the day.   The set up was