Hi Harry,
I am getting ready for just such a project. I have been scouring the interwebs for ages trying to gather all the useful info.
The best resource I have found so far is the Aprovecho institutional rocket stove plans. There is a YouTube playlist of an example build. While it took some digging, I managed to find a few documents which provide enough details to go forward with my own design and build of the stove. The main issue is that there will always be some customization needed to match your materials and pot along with any other requirements you might have. You can find a lot of info on riser and insulation material choices here on the forums. Also bear in mind the effect of the extreme heat on whatever your pot is made out of. I am planning on coming up with some kind of replaceable diffuser for the top of the riser to prolong the pot life.
-B.png)
