2 questions: 1. Whats your opinion on them? (Black Leaf - "Sea Mine" Glass Screens - Pack of 3 - Herb Grinders - Smoking Accessories - Grasscity.com) 2. The joint size on my newly ordered BOOMstack is 18.8mm, so what size glass screen do i choose if they have 6, 8, and 12 mm screens?
Love glass screens. They collect res pretty quick and can clog the bong though. So lately I have one in my bong, and one sitting in some iso. When I need a fresh one I scoop the one out that was soaking in iso, wipe it off and its like new. Then I throw the one I was using back in the iso and a day later its ready to go. Perfect system for a new glass screen everyday, in a sense.
The joint size really has no bearing. It depends on what size hole the designer of the slide or bowl wanted it to have.