Not sure about the Masterbuilt but have you checked out Utah's home made cold smoker? http://www.bbq-brethren.com/forum/sh...73#post2670073
Looks like it works great!
sittin' by the campfire with my Brethren friends.
Lifetime member of the Society for the Preservation of Authentic Royal Magical Rare Kaskaskian Peppers (Thanks Ash :))