Home made tube drop flue

[archangel_cpj]

Hey I have heard of a homemade tube drop flue evaporator and was wondering what it consists of I thought I saw one here awhile back I have turtle maples old 2x5 which is nice but Im building a new house so this year is a off year next year i want to increase my yield so a blower is going on and I need to make the front of the 2x5 pan a drop flue. ideas

[Uncle Tucker]

I saw it at Goodrich’s open house last year. It looked cool. I wish I saw it work. I think the person who made it is on this board.