Lowsuv wrote:
Dewey and Laman are in error on this particular issue because they have not witnessed it first hand .
The science that makes this work is the fact that the OSB square that is on top of the fire is parallel to the ground and reflects the heat back into the fire and gets the wet wood burning hot enough to eliminate the smoke .
A 2x12 would work as good but is not readily available anymore because those 2x12 joist sizes have been mostly replaced by I-Joists in actual construction .
Neither Dewey nor Laman has witnessed first hand the science that makes this Top Panel reflectivity that stops the smoky fire .
If they had they would not have taken their position .
If you want to have a non-smoky fire from now on , try the reflected OSB panel on top of a smoky fire once .
One piece proves the remedy suggested to be effective .
After that you can make your own determination .
As to toxic , these fellows do not understand that the higher heat of the fire works to lower the emissions not unlike the catalytic principle in autos .
This is a case where actual campers building actual fires with practical experience have better insight to the solution .
It sounds like we're using a similar technique by covering the fire, except for materials.
Might I suggest you try splitting a few slats out of your firewood?
I find the openness of the log cabin style adds lots of preheated secondary air to burn the smoke, making a hotter and 'cleaner' fire.
We refer to it as making an 'oven' inside the campfire. Works great for pie irons, hot dogs, sausages, burgers, etc.
Almost all heat, without the burnt and undercooked results of a 'cool' fire that is mostly small licks of flame and smoke.
We've burnt lots of OSB in the furnace, but not to cook over. After all the outgassing issues of OSB of formaldehyde over the past years, I probably wouldn't cook over it, though I may use it to start a fire.