Stainless steel could be easily cut with regular angle grinder with disk for stainless steel (most disks today stainless steel capable). Welding is same as regular steel, just use apropriate welding rods, or stainless steel wire for MIG. You could use regular CO2 for MIG welding if you have no argomix or argon. Seam will be slightly weaker, but more than enough for stove.
Stainless steel is very nice material to work with. Just remember that stainless steel hardens with slow cooling and softens with fast cooling, opposite to regular steel. So, drill, mill and turn with low RPM, otherwise it will be hardened and you will dull your tool.
Brick option is good, but you need stove bricks and figure out what clay/cement to use. I tested different mixtures gluing two bricks and trowing them to the fire and then to the water. Then tried to break the assembly and choose best one.
Stainless steel could be easily cut with regular angle grinder with disk for stainless steel (most disks today stainless steel capable). Welding is same as regular steel, just use apropriate welding rods, or stainless steel wire for MIG. You could use regular CO2 for MIG welding if you have no argomix or argon. Seam will be slightly weaker, but more than enough for stove. Stainless steel is very nice material to work with. Just remember that stainless steel hardens with slow cooling and softens with fast cooling, opposite to regular steel. So, drill, mill and turn with low RPM, otherwise it will be hardened and you will dull your tool.
Brick option is good, but you need stove bricks and figure out what clay/cement to use. I tested different mixtures gluing two bricks and trowing them to the fire and then to the water. Then tried to break the assembly and choose best one.