A Rocket Mass Heater is a woodburning stove that heats up a mass of some kind during its burn time. The fire then goes out and heats you and your house from the stored energy. In this case we have a bench which acts as the 'battery', but other things have been used such as beds and walls.

I should mention that when I recorded this video the stove had not been fired for a little over a month and I had only ran it for 15 minutes or so. This explains the low temperatures when I take out my laser-guided-temperature-measuring-device-thingy. Normally they would be way hotter.

SOME LINKS!

Here is a video of Matt Walker showing us his first iteration of this stove. He later created better versions but that was after we built our stove. Check out his channel for those amazing options.
   • Walker Wood Fired Masonry Cookstove a...  
Matt's website:
https://walkerstoves.com/index.html
Build discussion on the best RMH forum ever:
https://donkey32.proboards.com/thread...

Album of our construction process:
https://goo.gl/photos/GQMpLKVkdVKwUQws5
Layout of the Core:
https://goo.gl/photos/ULB5HNrv15Pt1rbh7
A google drive folder with two Sketchup files in it. One of the Walker Riserless Core and one of its door:
https://drive.google.com/drive/folder...
A forum thread discussing these sketchup files:
https://donkey32.proboards.com/thread...