Guess I'm a bit more "stubborn" when it comes to using things!
Although , anyone should know how a thing that he bought , actually WORKS...
It's like a new and complicated car...
The last time I did that I was "blocked" and desperately looking for the manual
Of course you can improve a thing , but experimenting would get you a lot more results!
That's why the "R&D" research and development department exists , right?
Yes, it's been nice thinking how those coals burn after all!
I was drawing, measuring, thinking about that grate and between buying and diy a grate I ended up yet again on the "diy side"!
I don't really understand why some manufactureres use cast iron on their grate; it has a lower melting point , it can crack and I really think a stainless steel grate or a steel one would be better!
I mean , the grate could melt anyway if one "forgets" the draft/air door open and the fuel is anthracite...
Maybe if it would be made out of tungsten or other high temperature alloy
If that grate "sits" on those tabs wouldn't it lose heat on those points?
I took rather "seriously" the "in the air fire pot" for better insulation and higher burning temperature/efficiency!
Of course it will be sealed, air tight!
The air "intake" will be made of steel pipe 2 inches diameter(50 mm) and probably with a valve/tap used to close water in normal conditions!
The steel pipe close to the stove I was thinking of beeing "clean" with no zinc(toxic fumes) or paint on it...
I "googled" some stoves (Hitzer 983)but haven't found too many results...
I'll try a bit more !
I found some firebricks here in Romania with an interesting composition
60% Al2O3 and 30 SiO2 , phoned them and the boss there said these types (round ones, OT7) weren't on stock and I may have to wait some time until they will be available!
The nice thing is that these bricks resist 1450 degrees celsius!
I have read some use even clay or glass wool to insulate a furnace and keep the heat in there and losses low!
You can acces this link to see the round bricks 195 diameter inside and 225 diameter outside!(scroll down to see the dimensions).
I also managed to get some 4 liter of SiO2 of 98,5 purity from another source!
Could come handy sometimes in the future if I want to make my own mortar!
Some perlite would be good but still haven't found a supplier!
I was thinking of using all these methods to insulate the furnace(heat bricks,a mix of heat resistant cement+SiO2 98% purity+some perlite and glass wool on the outside the last layer!
Not mentioned here is the method of supplying coal to this thing...
That's gonna be a even bigger headache...http://www.sobateracota.ro/Caramida-refractara
P.S. : this guy here made me really curios about furnaces :http://www.rotblattsculpture.com/Articl ... onzec.html