It’s kinda cool looking back at that post, seeing how I went about making that exhaust, how I made a mock-up, a prototype of it, using packaging from Marie Callender frozen dinner entrées:
My neighbors were suitably impressed when they saw me in my garage bangin’ away (get your mind out of the gutter!), hammering and riveting the zinc sheets into shape. One of my neighbors, a man, even made a remark about how he wished he had the “skill set” to do something like that!
I was rather proud of the finished exhaust:
I wanted the exhaust to be fairly air-tight, so I used foil backed duct tape and clear silicone caulk on the riveted seams. My concern at the time was for the longevity of that caulk, given that the floor of the duct will probably collect a lot of oil and grease, which may seep out and react with the caulk, breaking the seal and leaking oil and grease.
I am happy to report that the exhaust’s ducting is holding up perfectly! Tim Allen would be proud!