Quote Originally Posted by jfkansas View Post
The size of a piece of paper. lol About .004 is good. It is actually better to use paper since you can feel the paper grain and how much resistance there is when sliiding under nozzle.
The paper I use is .1mm thick and is standard printer paper around #20. I have a complete set of feeler gauges but I don't like them for this purpose and .02 is so fine it is like a Gossamer's wing so .004 you wouldn't even be able to touch it without it tearing.