I have, after way too much pondering, finally started the construction of my cob and brick oven powered by rocket technology.
It will be a black oven.
A big clay tile will be positioned over the riser and act as a pizza stone.
The power will come from a 6" J-tube built in dense firebrick and a "5-Minute"-riser.
Dimensions (inside) are feed 27 cm, burn tunnel 62 cm, riser 85 cm.
Exhaust will be 150 mm pipe.
I have an open ear for any questions and suggestions!
Yesterday I put down some foundation to keep the construction off the ground (there's sometimes rainwater washing down that path).
Then a layer of expanded clay bound with lime.
Then sand for an extra level bed for the core.
Then I built the core, sticking everything with some clay slip and adding some cob (actually more clay mortar, no fiber) on some of the joints.
I also researched how to use my laptops webcam to take time lapse photos (1 every 5 s). So I'll compile a time lapse of the build. Unfortunately I took a single photo the first day instead of starting the time lapse.