The Natural Philosopher wrote:

Andy Burns wrote:

So far I've gone the three chains for £24 route, and only managed to
dull one.

I find that you need to sharpen about every hour, and it takes about ten
minutes, and the file lasts about a chainsaw week at best.

Electric sharpeners mean you have to take the sodding chain off and that
takes even longer...

The dremel one looks like you can sharpen while leaving the chain on,
but swapping chains is tool-less and quick on mine, so resharpening at
home in downtime might be better ...