Ext Cap: how to make one in a few easy steps
A few years back a friend asked me how to create an ext-cap (also known as stencilcap). I made some photo's during "production".
The purpose of this extention of the spraycan can be diverse: from ultra thin lines to sweet fine calligraphy. But it can make or break your day: if you use it for the first time(s), you'll probably end up with a mess. :-D