A chimney stack attatchment for my brick bell

Hi all;   Thought I would share the saga about my attachment for the chimney stack on my new shop heater.

While building the rest of the stove my thoughts about setting the chimney were way in the back round.
Eventually I started thinking about this and I purchased a hvac square to 8" round register!  Perfect right...never tried it with a pipe...

That piece kicked around the shop for a week or two and then one day I dry stacked the spot where I wanted it to be. It looked good, I saw no reason to go any further until I reached that point in the build.

A few more weeks goes by and then I hired my helper (why did I wait ?)  While he was here I got an amazing amount of work accomplished, including mudding in the exhaust outlet. Still looked good...no reason to do anything yet... (famous last words)  I meen the roof isn't on and the walls are still going up why try to put up the chimney ?
Eventually I tried to place my stove pipe on the register....A real HVAC person would have known that the square to round register I bought was WRONG ... it was meant to be used with an 8" round flex pipe! Not an 8" round stove pipe!  Damm always something...
I went 60 miles back to sandpoint, searched all the stores .For some reason I did not go to a heating and cooling shop and ask an expert... I meen realy (hold my beer) I'm know what i'm doing  ...Yeah Right...
I purchase an adapter  from big box store, a register to 8" stove pipe, just the thing right?  ... WRONG … that darn collar on my original piece just was not going to accept anything but a flex pipe.

Closer examination showed that the offending collar could (by brute force) be removed from the rest of the sheet metal YES !  That should do the trick... WRONG AGAIN !  The collar came out easy enough but... still can't start a stove pipe.

I own a neat little tool.  Runs with a drill, it is a sheet metal nibbler.  After removing the collar I then had to nibble the hole larger yet to fit the crimped end of my stove pipe inside ! WHEW! It finally fit perfectly but only after mucho grief and extra trips to town...

Moral of my story is. Every part of your build is important, take the time to investigate all aspects  ahead of time it will save you from last minute scrambling and extra 120 mile trips to town...

Your story reminded me of the outtakes you watch at the ending of a DVD. Just as entertaining (if not more) as the movie itself.
But seriously, thanks for the candid report as these so called mistakes often teach us more about our build than if everything went smoothly. It also helps others see that even those that have been around the block a few times also have obstacles to overcome which provides a sense of confidence that anybody can do this rocket business if they keep an open mind, ask questions and not be afraid to get dirty.
Never saw one of those drill operated nibblers...have to look into that.
Sorry but my apple basket is empty right now....Donkey's upcoming workshop post snagged it! I'm sure your understand :)

Cool tool,  I used it to cut the bottom from my barrel as well.  It needs a 1/2" or larger starting hole, but once it starts cutting, it moves right along. Clean edge (it will cut you)but no curl of metal. You can use it to shape metal as well. Much better than a cutting torch. works in small areas better than  a pair of tin snips!
Here is a link I just looked up https://www.banggood.com/Double-Headed-Sheet-Metal-Nibbler-Cutter-Drill-Attachment-Metal-Sheet-Cutter-p-1021135.html?cur_warehouse=CN    $14.99 delivered

I think I saw Ernie using something similar on the cob style RMH video when he was forming the bottom of the manifold barrel. Probably will find its way into my toolbox too as there has been more than one instance where aviation snips have been a bugger to use. After all, what guy can't use more cool tools???