Really nice bag that! Where do you get the canvas and materials from please Kerne?
I bought the canvas from here:
http://www.angelicinteriors.co.uk/acatalog/info_380.html
and the leather, rivets and buckles from here:
http://www.leprevo.co.uk/
I used Gutermann polyester thread to sew it but have since come across upholstery thread which is really strong so I intend to use this on my next rucksack.