1 section of round ceramic chimney flue (about 10-12 " in diameter)
Bucket of chimney cement (or something like it)
18"x8" section of steel sheet metal, fairly thin( you can bend into a tube)
A blow-drier (will not be damaged)
Circular saw with diamond glass/ceramic-cutting blade
6"x1"x1" block of wood with a 45* angle cut on one end
aviator sheers (or any kind of sheers that will cut the sheet metal)
When used properly this forge will be producing very high temperatures. Please use caution. I am not liable.
Step 1: Getting Everything Together
Arrange the bricks on the ground, or a sheet of plywood, so that you have a platform wide enough for the flue pipe to sit on, with a space between two of the bricks for the bellows pipe (a gap about 2") See Photo. there will be brick protruding for the outside, (I used half bricks) they can be cut off or rearranged, or left. your choice.
Take the sheet metal and bend it around a pipe or something round until you have an 18" long pipe about 2" in diameter. it needs to fit into the gap in the bricks so that the end is about in the center of the flue pipe on top of the bricks. Use self tapping screws to anchor so the pipe keeps its shape. Cut out half of pipe inside the forge so air can get inside. Dry fit everything to make sure it works.
Step 2: Furnace Cement
Make sure there is at least a quarter inch gap between all the bricks, push some cement down into the cracks like mortar. line the edges of the gap for the air pipe with the cement, then insert, use some more cement to make the edges flush with the bricks.
Take the flue pipe and set on the bricks, cemented edge down, and push down for a close bond.
Using the putty knife and wood block to put a half inch layer on the walls and floor with a thicker bevel where the flue pipe meets the brick. Get the surface relatively even and smooth working the cement till no bits of the ceramic pipe or brick are peeking through.
put cement around where the air pipe meets the brick on the outside. cement any holes or cracks in the ceramic. The seam where the flue pipe meets the brick on the outside can be cemented too if you want.
Note: it is nearly impossible to get any of this to be nice and smooth and pretty, as long as it is covered and relatively even that is good enough.
Step 3: Firing
Step 4: Use and Enjoy!
Step 5: Modify and Improve As Needed
Anyways, here are some pics of the forge proper, more to come including in use.