Well, I wish I'd found something this light to begin with. Weight was the main objective of my DIY. I still plan on giving it a shot, though.. just to see how it turns out.
I guess if the door is only 3", it'd be tough to get a "decent" thickness log in there. My old "portable" woodstove had a 5x8 door. If you "skinned" a log down, you could get a pretty square log in that'd burn for a Loooong time.