[kag0]

The idea sounds fun, but I'm a little skeptical of the author's claims that it'll get to 80 degrees with only a small fire in front of it.

It's quite possible the author and I have different ideas of what a small backpacking fire looks like.

[oblib]

I can say without any worry of being proved wrong that it is very easy to warm that tent to 80+ degrees with even a small campfire like the one seen in the video with my grandson bouncing around inside it.

I use a layer of thicker branches about 3" in diameter first, then I use smaller diameter sticks in layers on top of that. When you light that off the smaller sticks burn down and create a bed of coals on the first layer that keep fuel burning as it's added.

By design that burns low and slow. I'm also burning deadfall from hardwoods, Oak and Hickory by choice, and because that's what's growing in our forest here.

[colonelxc]

One of the videos has a kid read off a thermometer at 79 degrees (with snow on the ground). You can judge for yourself the size of the fire in that video.

[jandrese]

Isn't that when you have the sun shining right into the tent? It's basically a human size solar oven.

[oblib]

Yep. The sun will warm it too.