Mike Haasl wrote:Hey Esteban, what does "processing woody bits" mean? Where is the wood coming from that you're processing? It seems you're making them into short chunks. I thought J tubes liked longer pieces? Curious mind wants to know 
Hey Mike 🙂 thanks for asking, and I appreciate you taking the time to look closely.
When I say “processing woody bits,” I’m really just talking about gathering what’s available nearby, cutting it down to usable sizes, and staging it in crates. Most of the wood is coming from around the Fischer Price house — fallen sticks, offcuts from cutting junkpoles by the drive down to 10', and short scrap pieces from the shop that were already under a foot long.
On the J-tube side, I’m still very much learning, so please take this as my current understanding rather than a hard opinion. My impression so far is that J-tubes tend to do better with shorter pieces fed vertically, which is why I’ve been cutting things down into that 4–6" range. My goal was mainly to avoid bridging and keep airflow consistent, not to claim nor leave an impression that this is “the right way.”
If you’re seeing something different or have suggestions on sizing or feeding, I’d genuinely love to hear it — I know you’ve got a lot more experience with rocket heaters than I do. Thanks again for the curiosity and for sharing your knowledge ...