This is a chuff drip tip for a Troll RDA. I've never been able to find a chuff tip that would fit my troll with the airflow still in place. So when I can't buy, I design. I have two grooves for gaskets but I haven't been using them with mine. Fit's pretty tightly as is.
I uploaded a larger one that should work on other RDA's besides the Troll. I haven't printed it to ensure it fits, so if you do let me know if I need to alter it.
There were a few things I wanted to fix to make it fit more flush on the Troll RDA. Should now be flush with RDA, slip all the way down into the airflow piece, and has a bit deeper gasket grooves. Also I redesign the "screen" to add a vortex and more coverage to prevent hot oil from getting on your tongue.
It's not the easiest thing to print, the lip is very small and its tough to get support underneath there. I did mine in natural nylon with 3D Systems INF support material. I tried to design the inner screen to not need support material, having the entire undersurface curved. When I printed it, there was support in the middle so try it with or without.