I began a belt with 10m of 3mm cord - I didn't come close to finishing a belt before I ran out of cord <img src="images/graemlins/crazy.gif" alt="" />. you can really get a lot of cord into a belt.

As far as unraveling the belt goes, once the pin is out, you nedd very little force to unravel the "chain". you will have a whole lot of cord in only a few seconds if you decide you need to destroy your little masterpiece <img src="images/graemlins/wink.gif" alt="" />