Been working on a butane vape, hope to release it soon. Here are some pics of the Essence.It is about 6" long and 7/8" diameter. The stem is a 14 mm glass piece, off to side for size comparison.The top and bottom caps come off to expose the mouthpiece and air inlet.There is a maple insert that the inlet and stem plug into. Since the maple sees all the heat the outer tube can be any type of wood without worry of "flavor" from the exotic wood. This one is purple heart.This shows the insert. In a production unit the insert is locked in place with a screw or a dowel pin.I have a machine shop quoting on the parts now, as soon as I get more info I'll be able to put a price on it.