Sandy Mathieu wrote:
Materials, details: We are primarily looking into castable materials, though we have some ideas for using board-type products as well.
I can not see how plain board materials, while cheaper could possibly hold up to the rigors of a burn tunnel.
I have seen a pressed Vermiculite Board material. It is awesome! It can be easily cut and shaped with simple tools. It has awesome fire/heat/insulative properties. It could be made in thicker sizes and cut to a round shape or even custom made to the round shape of your burn tunnel. For a product with a larger production this is definitely a technology worth considering.
I like what I see on the http://www.dragonheaters.com/ website. It is worth a visit to those who want to make this into a business, or who want a working product to buy.
paul wheaton wrote:I have also been served dinner from somebody else that is thinking about doing shippable cores.
I think Paul is referring to me...
I have come up with what I believe is an awesome design. I do have it working...somewhat. It entails about 3-4 feet of glass in the heat riser portion of the system and does not have the L-Shape that the typical rocket heater design has. I just can't continue to pursue this as a product due to needing to secure my own income for my family. But I would sure like to see some version of this design make it in to production. It is pretty cool to see the flames dancing 4 feet into the air FROM TWIGS! And it is quite HOT to have this producing heat that can be used to heat your home.
If you are interested in further developing this you can contact me at... Michael AT gr8Wisdom.com ... you also need to get past my SPAM filter, which is pretty easy if you can actually follow the instructions that come in the reply email from my SPAM filtering system (you just have to click on a link).
I have detailed photos, video, etc...perhaps I'll get around to posting it on the forms. Eventually.
allen lumley wrote:Michael Skowronski : I think al of us allowed this thread to go dead expecting that you would come back and add to your Post in a day or too!
Every one in the Rocket and Wood Stove Forums would like to see your contribution to the future of ' Castable cores ' Thanks, Big AL.
Thanks for the vote of confidence Big Al...
I actually figured this thread went dead once it was removed from the main topic. I am not such a regular contributor to the forums, I don't fully understand why it was moved, but I have respect for what Paul is trying to achieve and I know he has people keeping things neat and tidy so I did not complain...I guess I am trying to say I feel that moving my comment kind of shut the door on a good idea from a topic that was hot.
But if you really do want to see my design then view this new thread that I started to discuss my design...it kind of went flat too but anyway, perhaps someone will pick it up and run with it soon enough.
Rocket Mass Heater with a Glass Chimney
There are some videos there too to show the basic concept. And this design would definitely lend it self to a castable core.
(Oh, and now I see that you Al actually did visit that page soon after I posted it.)
shippable core - business opportunity
Which unfortunately looks like it has not progressed as well as Paul had hoped either. Sigh...good things take time don't they?
Let's go to the waterfront with this tiny ad:
five days of natural building (wofati and cob) and rocket cooktop oct 8-12, 2018https://permies.com/t/92034/permaculture-projects/days-natural-building-wofati-cob