I just finished building an earth (mud,adobe,cob,whatever you wish to call
it) oven in my backyard. I am unfamiliar with swedish oven design per se
and I have learned quite a bit about the different types of ovens. The
earth oven can be built any size you want, although the standard size is a
27 in hearth floor of firebrick. There is a wonderful book called Build
Your Own Earth Oven by Kiko Denzer which I used and that is available
online. I got mine from Amazon.com and you can see more about this oven at
http://www.intabas.com/kikodenzer.html
It is an environmentally friendly way of building and baking if you choose
to build it that way and can be quite inexpensive to build if you can
scrounge up the materials in you neighborhood (soil, rubble, sand, rocks is
pretty much all you need). Mine cost less than $500 and was easy to build
and $350 of it was for nice stones for the foundation. I chose this oven
over all brick for space issues. Plus the earth oven is an all out group
and family affair (kids love the mud!) although I did mine mostly alone
with some help from toddlers and friends. You could easily build a basic
oven in a day!
If you want a more involved project - still entirely in the realm of the
novice - is a true all brick oven which is outlined in the book The Bread
Builders, written by Alan Scott and Dan Wing. Scott is the oven master and
has his own site at www.ovencrafters.net Plans for this oven are in the
book which is a serious treatise on bread baking - no recipes though.
There is also a great group on yahoo! called brick-oven which you can
peruse and join. There is a ton of info, mostly on the brick ovens
designed by Alan Scott but there is adobe oven talk there as well. Kiko
Denzer answers questions about his oven there as well. He is very
approachable and a good person.
I think you can bake any bread you want in either of these wood fired
ovens, even flatbread varieties.
Good luck - if you decide to build an oven, have fun and prepare for
everyone you know to be in awe of you!
Evan