Burnout Firing to 1650 F
March 31, 2018
Kiln Chamber is 12" x 12" x 16" h
With a Combustion Chamber 4-1/2" h x 12" x 12" fired with 2-1/2" Mini Square Giberson (18 - 7/32") with #69 orifice
There are a few times in the year when this kiln idea saves my bacon. I have several kilns for firing things up, any one of which could be used if I were really forced to. But with this particular firing I had my big kiln still full of fired ware and the number of items (22 mini-square burner blocks and 7 burner heads) would overwhelm some of the smaller electric kilns. To build this kiln was the best solution. It was just a matter of unboxing the bricks and kiln furniture and connecting the propane. In all it takes just about a half an hour. Yes, I could put this up in a permanent spot but I really don't have the room, especially there in the driveway. So for me this is a great solution. With this kiln I can bisque pottery, glaze fire pottery, melt glass, burnout foundry molds for bronze pouring, or do other nifty things. But here I use it to clean up the wax from our casting operation of the ceramic burner heads, a project that goes on to meet external demands.
  • Kiln Begins With a Good Foundation
  • Cinder Block Base Covered with Used Kiln Shelves
  • Place Burner and Burner Block
  • Set up Propane Tank with Regulator and Hose
  • Create Firing/Combustion Chamber Using Kiln Shelf with Kiln Stilts Over an IFB Brick Floor 2-1/2" Thick
1091 1086 1083
Items To Make This Kiln:
  • Two Boxes G26 IFB (50 pieces)
  • BBQ Propane Tank with Regulator and Hose
  • Small 11" x 12" Kiln Shelf
  • 4 Pieces Kiln Stilts Under Shelf
  • 2-1/2" Mini Square Burner Kit
  • 2-1/2" Cast Burner Block
  • Cinder Blocks for Base
  • Used Shelving over Cinder Blocks
  • Manual Pyrometer
  • And when this is firing you move the propane tank to a safe distance.
Time Required to Set-Up = 30 Minutes
Time to fire to 1650 deg. F. = 5-1/2 hours
Storage Space = 10 Cubic Feet
Fuel Used = 1/2 Gallon Propane

This drawing shows how very simple this idea really is. One brick is stacked on top of another until it reaches a height enough to contain the items you want to fire or burn out.

When I was a sculptural student at the Rhode Island School of Design we did our foundry work in the basement of the museum building and there we built loose brick burnout kilns for our bronze pours. Some of the structures were several feet tall and 5 or 6 feet in diameter and we would build the walls up and corbel them inward to make a kind of beehive top. Structurally sound? I don't know, but I never saw one of them fail. Showing a great deal of wisdom the school fathers moved the foundry into its own building sometime around 1970. I was long gone but I have frequently thought how we were all so lucky the entire museum didn't burn to the ground.

roof over
Sourcing Materials