With a lot of help from those generous enough to share information on this board, I constructed a heatstick a week ago using a process similar to this.
Tonight, I ran her through some boil trials and noticed a pretty terrible odor coming off the exposed JB weld epoxy. It smells similar to wet paint. Steam coming off a rolling boil has the same off odor. I have read that others have used this type of epoxy in their heatsticks and understand that its not an FDA approved use. Have others experienced this odor? Did it go away after a few hard boils?
My concern is if anyone has experienced off flavors or other ill affects in finished product that they attributed to using this type of epoxy in direct contact with strike/sparge water or wort.
I certainly don't want my boil shortcut to jeopardize a batch of sweet sweet brew...