Introducing the new Six Minute Riser

Hi All;  After months of waiting I finally received plans from my world traveling consultant. The simplicity of it astounds me!  
Introducing the Six minute riser.  A variation of Pinheads highly successful five minute riser design.
An innovation that will simplify batchbox construction. It literally adds apx one minute to construction of a CFB riser!

A slot exactly the size of the port opening is cut into the skin of a five minute riser. The blanket inside is cut to allow folding around the edges of the metal skin.
A gasket of morgan superwool is clay slipped to the back side of the port.  Thickness depends on circumstances.
Riser is set in place and snugged up to the port.  Bricks are cemented down around the rear and sides of the riser shell to keep it from moving.
Using a bright light to see any gaps.  Plug any gaps from the outside with small pieces of superwool.  

That's all !   How easy is that.  
I wish I could claim this idea as my own ,but the idea was proposed to me from another master builder out of the country.
This is the first attempt to put it in a working stove.
100% success !  A full season of burning will be needed to confirm but all signs point to a rousing success!

In parting remember these words from John Glenn;
"As I sat, strapped in my seat waiting during the countdown, one thought kept crossing my mind -  every part of this rocket was supplied by the lowest bidder."

-John Glenn

Three cheers to a successful liftoff of another innovation that will take humankind to a whole new era of clean heating and cooking!

I hear Space-X has already contacted you for the copyrights....just be sure to put it in the deal that on the side of every one of their rockets, they need to put your logo at the top.  

I do like the idea of both the 5 and 6 min risers but..
I'm pondering over fine particles emissions from the ceramic fibre .
As far as I know they are  of the size of those from asbestos and thus being equally harmful.

Jura Rafal wrote:I do like the idea of both the 5 and 6 min risers but..
I'm pondering over fine particles emissions from the ceramic fibre .
As far as I know they are  of the size of those from asbestos and thus being equally harmful.

If you're using superwool it has a very low bio persistence, as they say.  

Hi Jura,    As Satamax pointed out, its considered to be safe. See page 11 in this brochure for more information from the company.  bio persistence
Do know though that other brands of ceramic fibre products other than Morgan Superwool may not have this same low bio persistence rating.

Gerry Parent wrote:Do know though that other brands of ceramic fibre products other than Morgan Superwool may not have this same low bio persistence rating.

I checked the mean fiber diameter  of the superwool products.
Its ~2.5 - 3.4 µm while those posing serious hazard to lungs are  of 0,01 µm.  
For 100% sureness it would be cogent to get know if the diameter of fibers present in flue gases hasn't decreased significantly (due to abrasion).  
Still we must acknowledge that such a diameter ranks the fibers in the PM2,5 - PM10 range.

Hi Jura,   Master builder Matt Walker has addressed this same question in one of his live chats. If you are interested in hearing his answer see: 9:20 minute marker in Stove Chat 7