Needle knots made easy

I picked this tip up when I was in Berlin last May ("what was he doing there?") und Er ist phantastisch!

The way I was taught to tie the needle knot involved needles, fire, burnt fingers and strong language (not German this time). Using a sewing machine needle is a simpler, if less dramatic, alternative.

This is of course the best reason to sew up your trousers. And once you've threaded the line you simply whisk up a nail knot.