[QUOTE=mparker762]I think the traditional thumb test is lightly dragging your thumb at right angles to the blade (not parallel or you'll get cut). A sharp edge will kind of catch as your thumb goes across it.[QUOTE]

So if I'm reading this right, I should do the following:

1. Lay the razor on its spine, edge pointing up.

2. Wet my thumb.

3. Drag the pad of my thumb across the edge at a 90-degree angle to the edge and a 90-degree angle to the blade. Like this cutaway view:

-----------------> (motion of thumb)
| (edge)
|
||
||| (spine)


Sorry for the bad ASCI art. It's my first attempt.

Thanks,
Josh