all opinions and questions are valid here, sorry not calling you out ---just passing on my few pointers ---the walker stoves are quite different from the average woodburn stove ---so no need for high temp paints---saving money---the bricks absorb all that heat and store it ---slowly releasing it back ---different to your wood burn steel ones ---they throw out huge amount of heat ---while theres fuel to burn ---then they are done ---yes they will have some hot surface for awhile --so to get lasting heat ---the habit is to dampen it down ---and have a smoldering fire ---bad for your health and safety ---and to keep it looking decent ---have to use expensive high temp tolerant paint. The oven from a cast iron stove would be worthwhile to use ---if its cast iron ---which does nt spall and rust like mild steel does , ---would need to have a decent flange around it ---to work with when mounting this into brickwork-----the round part shape ---i dont think it makes much difference to how an oven works---advantage or not --i dont know ---only just put this in ---have not used the oven yet ----only the hot plate part of it. ---- barrel is stainless steel --so should survive for awhile.---- i did see some pics of old cast iron oven inserts for the old cast ranges that featured a curved shape on top ---these also had two iron rods --either side outside of the oven box ---attached to a scrapper blade --which slid across the ovens domed roof---by push and pull you could move the soot build up on top of the oven--