Thanks Ed. The day has arrived. Here are the HI units I turned from the wood that Ed sent me. The two on the left are spalted afzelia burl. The two on the right are sindora burl and came from the same piece of wood believe it or not. I made a HI Top from the piece where the two woods meet.
I also made glass tipped wooden roasting tubes from the afzelia wood. There were too many internal cracks in the sindora wood and both wooden tubes broke. I will try to get some more photos when I get better light.
Espo - My all glass roasting tubes will fit into a 14mm gong joint. I would try to find something that will allow you to see the vapor filling the chamber so you can gauge your dosage and see when the herb is spent. Easy cleaning configuration is always a nice thing for glassware. Thanks for jumping on the list.
OhTheAgony - Thanks for posting the photos of the WW. That thing is really tiny. I thought the HI was small. You are getting quite the collection.
The aluminum deck plate might still be too heavy and conduct too much heat. It would have to be lighter. The air would only be heated with stainless steel and the heating element as it is now.