Someone asked if I could make a wine cork tube style (double screens) roasting tube with the ability to vary the bowl size. Here is my response to the question. The Slide-a-Bowl roasting tube.
It is similar in construction to my 2-piece glass roasting tube but has the ability to capture the roasting material between two screens so that it can be used in any orientation without spilling. It can be used with only one hand similar to the Wine Cork Tube.
The inner tube is 10mm x 8.5mm with a 8.5mm slidable ss screen. The roasting material is loaded into the inner tube. Small amounts of material can be loaded into the tube. The inner tube slides into the 13mm x 10mm outer tube until it stops at the 10mm slidable ss screen. The material is now captured between two ss screens. The silicone sleeve stretched over the 13mm glass tube holds the 10mm glass tube in place and also fits into a 14mm fitting.
After the inner tube is slid into place, the 8.5mm screen can be slid closer to the 10mm screen using a bamboo skewer tool or other suitable device. I leave a small gap between the screen and material to allow some movement for shaking. Stirring is fairly easy. Remove the 10mm glass tube from the 13mm glass tube and then slide the 8.5mm screen farther down into the tube using a skewer tool. This will allow plenty of room for stirring plus it will wipe the oily glass roasting material so there is never a buildup on the glass. The 8.5mm screen can be slid closer to the 10mm screen for higher roasting temperatures.
The outer tube stays clean since it is only used for holding the inner tube and connecting to the end of the HI heater cover. The 10mm ss screen provides the stop for the ss HI heater cover so it never contacts the roasting material. I have not been able to combust using this new tube configuration with the HI plugged into a fixed (12) voltage power supply like I can with other tube configurations. The flavor is very good.
Nice to be able to roast small amounts and get that first bowl fresh taste more often. Since the outer glass tube is 10mm ID, it will fit onto the other log style vaporizers (ud, enano) heater cover.
The cost is $18 plus shipping.
Planning to make some tapered wine cork and some tapered wooden connectors to replace the silicone connector. They will be sized only for 18mm. The cost will be more depending upon the wood.
Thanks @EveryDayAmnesiac still waiting on the pups but the second puzzle piece will be here tomorrow. The triforce will be complete soon though, I'm stoked! 
, Now i just have to decide what stems to get. I already know i want a Wong cut from the same piece of wood my H.i is, And can't forget about the small glass with cork and regular size wine cork stems