8" side loading batch rocket, oven, bell with bench Mar 13, 2021 6:27:45 GMT -8
Post by jliebler on Mar 13, 2021 6:27:45 GMT -8
I've been away a while but back now planning the fireplace (masonry heater with oven) for my new house. To make it look like a sort of conventional fireplace I prefer to try side loading and use a commercially available door. I'll cast the firebox and riser with the riser lined with 1" ceramic fiber blanket and the firebox lid a piece of 2" ceramic fiber board. I plan to use a floor channel with the floor tube 3"x2" x .083" wall and the upright tube 2" square 0.120" wall. Combustion air will supplied through the firebox casting floor and effectively the wall opposite the port through a 3" x5" opening above the floor channel. The air supply also serves as an ash dump and will be fitted with an adjustable damper to close off all air, supplied through ducts from outside, and reduce the total air supply, to slow the burn rate. The door I've, tentatively, chosen is a bit too tall so I've compromised the firebox height (about 1 1/2" too tall) and the door side firebox floor slopes at 30 degrees instead of 45. I'm working on the mold designs for the core, in Sketchup, current plan is 3 pieces to make the core with bottom of the riser using a 16 segment polygon for the riser. I'm thinking of using soapstone countertop material (1 1/4" thick) for the portion of the bell below the heated bench and the bench top hoping to pass inspection with a single wall then up to the oven floor conventional firebrick (shiners) above the oven floor insulating firebrick capped with ceramic fiber surrounding the firebrick with thin ceramic blanket and stone. The chimney will be clay flue liners wrapped with ceramic blanket surrounded by insulating firebrick. Comments please!