Conversion of conventional fireplace to rocket mass heater possible??

I have a conventional fireplace and I'm trying to find material on how to convert it either that or just convert to a rumford fireplace. If you can help me out it would be much appreciated.

Ron, if you don't have the sketchup software, please download it. This way, i could show you a few ideas.

And please, post a photo or two, so we can see the actual chimney.

Hi Ron, here's one who actualy did it, following my ideas.  

http://donkey32.proboards.com/thread/1274/rocket-heater-fireplace-design?page=9

Here, we never had any news from Kevin Prata.

https://permies.com/t/40/31382/Rocket-Stove-cast-riser

But if you check my fourth post, you will see what i am on about.


Again the same drawing for another fireplace

http://donkey32.proboards.com/thread/1354/build-house-detroit-scrappy-approach?page=1&scrollTo=13248

This one would have been ideal to use as a bell for a rocket.

Another one we've turned around on fitting it in the existing fireplace. And finally he changed his mind.

http://donkey32.proboards.com/thread/2076/fireplace-batch-box-conversion


This one from Radek, is not a fireplace retrofit.

But it is lovely.

http://s101.photobucket.com/user/snake11112/library/?sort=2&page=2