Rico Loma

Superb work. Any visitor to your home can't miss your ethical priorities,  steady heat without a heavy smoke output, I like that.

Can you explain a little about your wool insulated feed tube....did you wire the pieces to the brick before cobbing?  Or use hardware cloth over wool before cob? I

If height is a big part of your equation, I  think John has your dilemma solved.  One inch insulated panels surrounded by metal....then critters and bugs can't colonize your insulation , and no need to install a floating floor
Depends on cost,  but his idea offers significant time savings

Yes, that inside pipe would be an awful idea.   Appreciate the heads up.  I don't know  much terminology, how can I say 'removed' in a  better way, um, a temporary steel/ductwork pipe? Sorry, I was considering a lightly greased 6 Inc pipe, maybe with wax paper gasket.  Then when mixture is half set, I could slowly pull the pipe out before firing?  I can try and let you know if it succeeds, is this possible to leave a smooth blemish free surface for the riser

Glass can be your best friend on this type project.  Yes it is breakable.   But serendipity can strike......used triple pane doors on sale for 40 clams?  O heck yes. They were so strong i bet a framing hammer might struggle.  I bought them both on the spot.  

I am lucky to frequent two nearby salvage stores run by Habitat for Humanity, ReStore by name . They sell loads of discarded windows, doors and occasionally stacks of glass without frames.  I also see a few screen doors and storm doors there, with usable glass panels.  ReStore is worth a perusal, before going for plastic.  

Now I see more of the big picture, thank you Thomas.  These concerns are riser concerns.  
Fireclay with perlite risers are looking better all the time.

Would it make sense to form one as a sandwich, the perlite mixture packed  between 10 inch stove pipe and a 6 inch sacrifice pipe in the perfect center? That way a good two inch cylinder could face the force of repeated firings?
Does anyone have a good ratio for mixing a robust clay/perlite riser, maybe 60/40?

One more question,  I pray you
Have any of you changed your methods of stove building, aside from Fox, with this realization of superwool toxicity?   I am thinking of Thomas and his shorty core build.... with lots of steel framing protected by superwool.   Should I just keep it out of the core, or abstain from using it altogether? Thanks for the help

Much obliged, Phil and Randy.  I might let a bit of residue collect this year before trying one of these alkaline scrubs......and wait until midnight to add the caustic mix, lessening the risk of air quality damage.  Hmmm.  A better solution perhaps than giving free rein to the chimney sweeps with their dark arts in full daytime flow

Great to see your work, your creative spirit and quest for innovation are an inspiration for all

Learn something new every day on Permies!  Thanks for all the information folks, knowledge gives us power.  Which is better than particulates giving us health problems
Fox, I am with you, and pray for your one kidney. I came out of surgery, chemo and radiation with a vastly different body and an enhanced will to live....having lost one kidney and all saliva glands in the bargain.  So these warnings and suggestions are taken to heart; I try my best to stay vertical on this verdant green planet.

Could superwool be put in a cob sandwich for a riser?  I envision cutting the blanket, then dunking it carefully into clay slip.  I could then slather cob around a wood riser form, add the superwool around that, and finish with another layer of cob. After firing the rocket to burn out the wood, I could inspect for any blanket that might be exposed.  Patch then with cob before the next firing.  Safe or another folly?

If this sounds plausible, I can give it a try.  
Alternatively,  I could just stick to cob, fire brick or refractory casting......?  Opinions and RMH proselytizing welcome!

A mighty funny poem from a mighty woman!  Are you starting to build your new willow feeder?  Please let us see your progress.

Fifteen years of good effort. Respect.  And no need to waste any time.......it's officially waste time!