Bias Binding

I have been making 1 1\4" bias binding for my eyemasks. This takes a while but once it is done it lasts a couple of years. Made from a metre of material I suppose I get about 40 mtrs of binding. This is the website for the instructions for continuous bias binding. 

http://quilting.about.com/od/bindingaquilt/ss/binding_strips_4.htm  

Above is a photo with the cutting lines. And a view of how to iron the folds using pins.