DIY Catalytic converter for your wood stove

Thought this looked interesting, I want to explore home made off the shelf catalytic converter ideas for wood stoves.

http://www.motherearthnews.com/diy/wood-stove-catalytic-converter-zmaz83jfzraw.aspx#axzz3PByMy0XN

Hey Trying2Hard, looked at that a while back, looks simple enough to add to an existing wood stove,

Looks like it's not to difficult to make and probably works as it's intended. I see that same idea using lava rock in the converter will also work and last forever. I was always going to fabricate something similar to that, but just never got around to it just yet. Too many things to build and so little time!