I tried asking GHL what this material is and they were not able to say because its their own material they want to keep secret but they assured me it's heat safe and I think its the same stuff that's between the chamber walls and the GH body, so if that doesn't melt, which it doesn't, then surely the cone in the mouthpiece won't. I think it's a material that is mixed with glass or something but I've never noticed anything funny about it and I'm satisfied that its safe. By the time the vapor reaches that proprietary material cone in the mouthpiece, its cool enough not cause any issues, otherwise you wouldn't be able to inhale it it would be so hot. I think GHL has done a lot of research to design the most efficient mouthpiece that will keep it the coolest because its such a sort vapor path, its a metal mouthpiece and its convection heat. You could remove the plastic stuff out of the mouthpiece but I'm sure the mouthpiece would get too hot to use without the silicone guard in place.
I can understand why people are weird about plastic, especially plastic your inhaling heated vapor through but I think these companies want to put out a safe product and I think they do plenty of research to make sure to use the right plastics that are food safe, non gassing and heat resistant and monitor the temps around these plastics to make sure they don't get hot enough to melt or something, otherwise they would use another material. I don't think vaporizer companies want to put out a product that is unsafe or one that could possibly melt, otherwise no one would buy their product and they would be out of business. I for one have completely changed my onion on plastic after owning a Crafty and Mighty which are all plastic, the entire vapor path is plastic and they are two of the best vaporizers out there, if not the best from one of the most reliable, well known vaporizer companies so if they're doing it, then they know it must be safe and a proper materiel. The Crafty and Mighty produce some of the thickest and most flavorful vapor I have ever experienced, all through plastic so I don't have a problem with plastic as long as its the right kind. I have had plastic melt on some of my vapes, I won't name them but even so, I feel that with the right care and proper handling procedures, they can be safe and they can still be great vapes.
Back to your question
@tubasco , The screen is crimped onto a threaded metal ring that is permanently attached to that proprietary cone. There are 3 little notches in the threaded ring where that brass pipe you see with the 3 "teeth" stick in these notches, allowing me to thread the cone/screen assembly out. The copper looking metal cone sits on top of the propriety cone, between that and the actual metal mouthpiece. It is not necessary to remove the screen to get the mouthpiece clean, you should be able to get everything from the end of the mouthpiece and see behind the screen if you missed any. I don't think that copperish cone gets dirty at all beside the very end that touches the metal mouthpiece. You should be able to see the notches and everything in that previous photo. I hope that helps
![:\](/i/s/hmm.gif "Hmm :\")
