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Richard Hauser
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Location: NJ
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Sorry but if this has been covered, then I haven't found it, but has anyone tried to use titanium sheeting to wrap the combustion chamber and flue and then just fill the extra space with vermiculite?
Or does the fire get hot enough to ignite the titanium (~2200 deg. F)?
Obviously this would only be used only for the hottest sections due to the high cost.

Sorry if this is a dumb question, I'm still saving up to buy the books and DVDs.

Richard Hauser
 
allen lumley
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Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
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books fungi hugelkultur solar wofati woodworking
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Richard Hauser : A prepared Sleeve or U-shaped trough made from a Sheet of Titanium, that starts with holding a flat shelf made of Perlite and Clay slip, onto
which you would slide a Castable core of dense, hard, refractory material that would then be surrounded with More (packed) Perlite Might be the right support
And combination of strength and refractivity (added by the Polished surface of the Titanium) to Not crumble during testing!

This configuration could be much lighter and need much less supporting Cob Mass, thus streamlining and speeding assembly in one or two days, and could then
be more rapidly fired and tested!

It actually looks like multiple segments locked together to make up a core may produce our First Durable Core combination! A sketch of a possible prototype
made of standardized parts and locked together with gaskets or just Clay slip was proposed by Alistair Warburton June 29th last year in the Forum Thread
started by him '' New to this … New Heater? '' in the rocket stoves forum ! My contribution at the time was that if the sections had enough strength as
single units, then when they were sealed with clay slip, one could hope that these joints would provide natural lines for the cracks that would serve to relieve
stresses And remain virtually gas tight !

However I do believe that the Sleeve or U-shaped trough could be made up of either Stainless Steel or Aluminized Steel, which has a much higher Refractivity
index than Stainless ! - Which I am saving up to buy ! For the Crafts Big AL !
 
allen lumley
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Posts: 4154
Location: Northern New York Zone4-5 the OUTER 'RONDACs percip 36''
58
books fungi hugelkultur solar wofati woodworking
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Gizmag Emerging Technology Magazine is reporting on Titanium bike frames made with a 3D printer that Deposits '' Titanium Powder'' That Gets (Welded?)
into a whole with a special laser!

I don't know that this will ever be cheap, but by using a process very close to sintering they can get flaw free, impurity free parts that fuse together perfectly
at a much lower temp than Titanium usually gets worked at ! BIG AL !
 
This will take every ounce of my mental strength! All for a tiny ad:
2017 Rocket Mass Heater Workshop Jamboree - 15 workshops in one event
https://permies.com/wiki/63312/permaculture-projects/Rocket-Mass-Heater-Workshop-Jamboree
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