Well it's been 3 months since I built my 2nd HH with fresh cut and split Oak. It looks dry from the outside, lot's of radial cracks and the wood color is darkening. I took a moisture reading from my cheap $20 meter, and the outside was averaging 12% to 15%. I cut a piece in half and it pegged the meter at 35%. You could see the moisuter leeking out the holes from the meter. I haven't burned any of this wood yet, but I bet it's still not ready. So I think that 3 month dry time for a HH is wishfull thinking. Maybe 6 months? I'll keep you posted.