md_massimino
So your spark arrester is a strip of woven steel about 10" wide by about 6 feet long, then rolled to the diameter and stuffed into the top of the pipe?
I have had some serious fires in the oven with flames rushing up the flue but never seen any sparks out the chimney top.
The oven and doorway with the 'floating steel surround and arch' is working well with no cracks at all. It also gives a great support for the adjustable hinge pivots which allow the cast aluminium doors to well seal the oven.
Cheers.
Neill
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