Modifying a wood furnace to increase efficiency

Geo NR Gee · 03-05-12, 12:12 AM

The secondary burn modification is complete and ready for a test fire. All of the parts used to make this modification are used pieces of metal repurposed from things like a old treadmill, and some old pipe. Of coarse the stove was built in 1985 too.

Below is the "L" with the air holes that the pipe goes into. Notice that the holes are staggered.

I found that my wood clamps help when drilling the holes in the pipe. It also made it much easier to use the center punch as well.

Everything is welded, the fire bricks are in and ready for the first new secondary burn modification fire.

03-05-12, 12:12 AM	#11
Geo NR Gee Journeyman EcoRenovator Join Date: Jan 2011 Location: Seattle Posts: 326 Thanks: 109 Thanked 23 Times in 18 Posts	The secondary burn modification is complete and ready for a test fire. All of the parts used to make this modification are used pieces of metal repurposed from things like a old treadmill, and some old pipe. Of coarse the stove was built in 1985 too. Below is the "L" with the air holes that the pipe goes into. Notice that the holes are staggered. I found that my wood clamps help when drilling the holes in the pipe. It also made it much easier to use the center punch as well. Everything is welded, the fire bricks are in and ready for the first new secondary burn modification fire. Attached Thumbnails Last edited by Geo NR Gee; 03-05-12 at 12:18 AM..