How do I know when my weed is done in the Crafty?
The simple answer is, when you are done with it.
In reality everyone has different needs from their herb. Typically most people cache the load when vapor production ceases. When you start blowing no vapor, that's when you know the load is probably done.
Some vaporizers let you keep cranking up the temperature until combustion. Your herb will continue to vaporize until it reaches that flashpoint of combustion.
The question is, do you want those temperatures? For several months I was medicating up in the high temperatures, and I found I really didn't enjoy the effects at those temps. So I dialed things down and now I cache my load when I'm finished at around 400F.
Is there still good stuff left in the herb? Sure. Do I want to vape it? Nah not really. I simply save the leftover ABV to use in edibles to give out to my friends