This has probably been discussed ad nauseum, but I couldn't find it in a search, so here it goes.

I have a Norton combination set (220/1k, 4k/8k) and a ChiCom +/- 12K. Additionally, I have a pasted balsa strop with .5 micron diamond paste and a suede covered strop with CrO2.

I've honed my razors and while they're sharp enough to shave with, the whiskers aren't exactly jumping off of my face. During honing, I test them on arm hair, and the blade glides through it with ease. But, my arm hair is pretty fine and my beard isn't.

So, my question is, how can I tell when they're sharp? What test can I do to see if it's time to move from one stone to another?

Thanks in advance.