• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com pie forums private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nancy Reading
  • Carla Burke
  • r ranson
  • John F Dean
  • paul wheaton
  • Pearl Sutton
stewards:
  • Jay Angler
  • Liv Smith
  • Leigh Tate
master gardeners:
  • Christopher Weeks
  • Timothy Norton
gardeners:
  • thomas rubino
  • Jeremy VanGelder
  • Maieshe Ljin

Pizza oven build.

 
Rocket Scientist
Posts: 791
Location: Guernsey a small island near France.
299
  • Likes 15
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Sorry this is not a rocket mass heat as such but there are many similarities, high mass heat storage, clean burning and smokeless.
I have been building them for around 20 years but as I am pretty much retired now this is probably my last one!
This one was a great opportunity to spend my customers money as he had a high budget and I can go out with a bang…..
IMG_1016.jpeg
[Thumbnail for IMG_1016.jpeg]
IMG_1040.jpeg
[Thumbnail for IMG_1040.jpeg]
IMG_3253.jpeg
[Thumbnail for IMG_3253.jpeg]
IMG_1260.jpeg
[Thumbnail for IMG_1260.jpeg]
IMG_1276.jpeg
[Thumbnail for IMG_1276.jpeg]
IMG_1568.jpeg
[Thumbnail for IMG_1568.jpeg]
 
steward
Posts: 16058
Location: USDA Zone 8a
4272
dog hunting food preservation cooking bee greening the desert
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Wow, thanks for sharing that beautiful pizza oven.
 
Posts: 36
15
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
What's the oven? Is that a kit? Looks interesting.
 
rocket scientist
Posts: 6322
Location: latitude 47 N.W. montana zone 6A
3199
cat pig rocket stoves
  • Likes 8
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hat's off to you Fox!
That is an outstanding build!
A superb example of your work.
 
Rocket Scientist
Posts: 1809
Location: Kaslo, BC
525
building solar woodworking rocket stoves wood heat greening the desert
  • Likes 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Amazing craftsmanship Fox!
A functional work of art
 
Fox James
Rocket Scientist
Posts: 791
Location: Guernsey a small island near France.
299
  • Likes 6
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Thanks guys, I was particularly proud  of my brick chimney that I shaped from solid red clay bricks with a 4” hand grinder!
All the stone is local recycled granite.
The space around the cast dome was backfilled with vermiculite, I used 500 lites of it in total.
The oven takes around two hours to saturate with heat, the top of the dome will reach 550c and the floor around 425c, it takes a full three days to return to ambient temperature., giving the opportunity to cook at a range of temratures
The woodwork is made from recycled oak that was a 120  year old table.
 
Fox James
Rocket Scientist
Posts: 791
Location: Guernsey a small island near France.
299
  • Likes 6
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Leslie Walper wrote:What's the oven? Is that a kit? Looks interesting.


I build them myself in a mold that I made.
Cast from fondu cement, graded, crushed firebrick with added basalt fibre and nylon burnout fibres.
That one is a 34” dome and weights around 400 kg.
 
gardener
Posts: 5169
Location: Cincinnati, Ohio,Price Hill 45205
1010
forest garden trees urban
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
RapidSet CementAll is the closest thing to fondu cement  I've been able to find in the States.
550 degrees celsius =1022 degrees fahrenheit, so not rocket temps, but well above what Portland cement is rated for.

I'm curious, how do you lay and light a fire in a dome oven?
From reading about how fire was used before grates became common, I'm guessing its top lit.
How would you describe the flow of air/ combustion gasses?
 
Fox James
Rocket Scientist
Posts: 791
Location: Guernsey a small island near France.
299
  • Likes 8
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
William, Fondue is rated at 1200c , it is a standard European refractory cement. Prices have gone mad recently, pre covid I was paying £20 for 20kg. now it is £45.
Yes a top lit and square staked fire, normally takes four loads to heat a cold oven but you can re boot a warm oven the next day with just one load.
How the oven works has not really changed for two thousand years, the Romans worked out the formula for us and it has not been improved since. Materials may have advanced but there are still complete roman ovens to be found in Italy!
So basically cold air enters through a correctly sized door and travels and a low level to feed the fire, the fire heats the top of the dome and exits from a correctly placed chimney, as long as the propositions are right, the hot air will form a circular motion taking any smoke  to the top of the dome where it is burnt off  before exiting the dome.
Simple and clever.
IMG_9890.jpeg
[Thumbnail for IMG_9890.jpeg]
 
Fox James
Rocket Scientist
Posts: 791
Location: Guernsey a small island near France.
299
  • Likes 5
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I have a few videos on my channel, this one shows me casting a dome, that particular dome is a smaller 30” model but was my most popular sales.
 
William Bronson
gardener
Posts: 5169
Location: Cincinnati, Ohio,Price Hill 45205
1010
forest garden trees urban
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The bigger dome seems to be made of sections, is the 30" dome a single piece?
 
Fox James
Rocket Scientist
Posts: 791
Location: Guernsey a small island near France.
299
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The 28, 30 and 32 were done in three rings. i have sold all those molds, I still have the 34 and 36 but they are in very used condition and not really worth selling.
This video was a 32” in three rings and a fibergalss outer skin.
 
Arch enemy? I mean, I don't like you, but I don't think you qualify as "arch enemy". Here, try this tiny ad:
Rocket Mass Heater Jamboree And Updates
https://permies.com/t/170234/Rocket-Mass-Heater-Jamboree-Updates
reply
    Bookmark Topic Watch Topic
  • New Topic