@baxter are you referring to condensate inside the Nano dry stem? That's not weed dust, that's cooling vapors on the glass stem before it gets to your mouth. I use hemp fibre on a bamboo skewer to wipe it up then vape that fibre. It's taste is good and effects are potent! Others soak a stem in creamy cocoa.
IMO, limited though it is, different varieties do produce different condensate. If you've been vaping schwag, with small amounts of trichs & other goodies then the production of condensate would be lower than other better varieties (strains) IMO. Vaping crappy weed leaves little extra behind; Kind bud will leave lots more behind in the form of golden vapor condensate.
Look at the close-up picture
here by
@vtac
My stems look like this in about a week depending on usage (obviously).
Apologies if this isn't what you meant
@baxter my friend
I just get excited when I think I have something to contribute!