On Monday, 12 September 2016 19:01:44 UTC+1, Another John wrote:

I noticed these emerge 3-4years (??) ago, trumpeted as a miracle cure,
but they were very expensive then, and I was sceptical of the power, the
battery life, and the tool life. Probably time to look at them again.

I just bought this - superb.

http://ebay.eu/2csoPCN

Get some spare blades and off you go.