Here is an update to my 18mm glass roasting tube configuration. I replaced the flat second screen with one that is shaped to fit inside of the 18mm glass fitting similar to how most vaporizers with 18mm male glass ends have. The screen now stays with the 18mm male part like using an EQ cap but it is flush with the end of the glass so the screen is closer to heat source and much less of the screen is in contact with the material. I just dump the material out of the FtF fitting and brush off the end of the screen in the male fitting. The screen in the FtF fitting never gets dirty. So much easier to use now.
The tube can also be used with the EQ, Easy Vape Digital, Hot Box, Vapor Brothers, or any vaporizer with an 18mm fitting. Silicone tubing fits nicely into the end of the glass mouthpiece tube for using hands free.