Bacpacjac, if your hubby works with sheet steel this might be a better model to work from, five flat plates with tabs and no hinges. I've been look at these myself though I don't know if there's any thing similar available in your neck of the woods.
Thanks so much, Cauldronborn2! Forwarded to bacpachubby! There doesn't seem to be anybody local selling these so we're working on building one. (Well, he's building and I'm helping with the design requests.)
I found this simple mod for the Esbit stove that looks like it will work well, and we just happen to have the materials on the work bench waiting for a project. It's not as elaborate as a firebox/bushbox stove but it's a good start.
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