Originally Posted by daveocelott
You are going to have to explain this self feeding fire for me.
===> Well, I'll try, Most wood campfires are started and burned from the 'bottom up'. A small teepee fire with kindling is started, then one puts successively larger pieces of fuel/wood on top of the fire as it gets bigger, and consumes the smaller pieces.
There are several fire lays for a self-feeding fire. The most common today is built by laying the largest logs/pieces as a flat base, close together. Then another, slightly smaller layer is laid crosswise on top of the base. This is repeated, alternating the size and crisscross orientation of each layer until you reach the desired height. You now have an almost solid pyramid made with alternating cross layers. You THEN build a tinder/teepee style fire on TOP of the pyramidal fire stack, tending that for a bit.
As the fire burns, hot coals drop down into the lower layer(s) and ignite the larger pieces. Those pieces send larger coals down to the succeeding layers, the fire in effect "feeding" itself! A well built fire stack can last almost 12 hours, depending on fuel size, spacing of logs, and stack height, as the fire collapses into itself, creating a huge bed of nice hot coals ready for cooking breakfast in the morning!
Makes some nice charcoal for water filtration and Pine Pitch glue, too!
Why get up???
~ SkyPainter - The Hammocker / Bushcrafter