Kinda working on the same thing I have a drawing and a concept (proved) so far, I didn't wanna take the smoke daddy approach and rely on the wood to stay lit, so I have a propane pilot burner I used in the proof of concept and I am waiting on a couple of things to build the final product, however, the hope is that I can run chip or chunks through it as I have a means of making both. I will get pictures as soon as I get somewhere.