Sumfink - a top tip
When buying a Clipper lighter - remove the flint stick pokey thing (actually known as 'sumfink' - "Excuse me mate have you got a match or sumfink") and turn the screw on the flint until it pops out - now put it back in but just enough for it to grip.
This will enhance the working life of your clipper, flint and scrapy wheel thing greatly.