In my continuing quest to use readily available manufactured materials for stove construction, here is the steam pan charcoal stove with "perforated lollipop" air control. It is a 1/6 size steam pan (roughly 6" x 7" x 4" deep) inside a 1/2 size (roughly 10" x 12" x 6" deep) with 1" ceramic fiber board insulation between. The charcoal chamber is lined with expanded stainless steel to extend the life of the inner pan and improve air flow. Army surplus D rings are used for pot supports. Threaded rod for legs. It can be easily disassembled for repair. It has a small charcoal capacity like the BURN's Jikokoa (formerly Tank).
I plan to eventually build a two burner version in a full size steam pan.Nike

The inverted pyramid rebar stove is ubiquitous in Haiti. Lots of radiation and convection away from the pot. No air control. Pot is often placed directly on the charcoal which quenches the charcoal and interferes with good radiative heat transfer.
I cut up a scrap stainless steel kitchen sink, built a sheet metal outer box, put in 1" of ceramic fiber board insulation, and added legs and pot supports. The inverted pyramid grate will have the legs shortened and be placed inside the "sink". A slide gate with sets of progressively smaller holes will be added to the "drain" for air control. nike

Wocket Stoves

Sustainable Berea wanted me to build them a couple of rocket stoves to be used with woks for stir frying lunch during their local Solar Tour.

I bought a couple of 14” steel woks for cooking and a 14” stainless steel wok and a 13 quart stainless steel bowl for skirts.

I used the stainless bowl with 4“ galvanized steel stovepipe and the stainless wok with 4” stainless steel stovepipe.

I used 4” Tees for combustion chambers, 2x4 metal stud piece for feed chamber and expanded metal for grate and back wall of combustion chamber.

I used 6 gallon metal buckets for the shells.

I put a 1” thick piece of ceramic fiber board under the bottom of each Tee.

I put an 8” stovepipe outside of the galvanized steel riser to reduce overheating and insulated between it and the bucket with fiberglass insulation.

I insulated around the stainless stovepipe with two 1” pieces of ceramic fiber blanket and between the ceramic fiber and the bucket with fiberglass.