You can use a very small amount of herbs but if you put too much inside, vapman won’t work properly due to the lack of air flow.
8. Once heated up, start enjoying: take a deep breath without stress and repeat as often as you like. On the middle piece there are tree airholes, the more they get covered, the denser the vapor gets.
After some time, you'll get a feeling for your personal preferences of the vapor. If it feels harsh and hot it means you have heated for too long and if the vapor doesn't have enough taste you can heat a bit more. 9. As soon as there is no more taste, you can check the state of your herbs. When their colour turns into dark brown and they smell rusty, they no longer contain active ingredients and can be removed. 10. After each filling, give the filter a good rub on a piece of cloth or a paper towel. Clean the filter while it is still warm. This is the easiest way of removing any residue. 11. Install the upper part again and put the vapman back in his case. The case closes simply by lightly squeezing the two parts together.