Simon,
no disrespect to anybody here but Anything that has to do with pens these are some of the best around. I belong to this forum also they will answer all your questions & also are a great bunch of guys.
http://www.penturners.org/
I have made my own cutters from HSS. They are 1/4" x 1/4" x 2-1/2" long this is a pic before grinding the cutting part I wanted to make sure they fit first.
Sorry I would put the dimensions in metric but I was never taught the metric system in school & have no clue on the size.
Click the pic...
Tep,
I got a question where you give the link to cpt Eddies steel snake how did you link to a PDF file? I tried but couldn't figure out how it's done. I wanted to post Wayne Bower's version That's mostly the one I used myself.
Chuck