Well, I have no clue as to how to build a holz hausen, but since I have an abundant supply of maple, I thought it was worth a try. Started the third one this past weekend; have to go back and stack what I split the rest of the day. Since it's not at my house, I don't get much time to work on it. The maple was cut last fall and stacked all in 10-12' log lengths, but I am starting to wonder if it will go bad before I can buck it all. Anybody have an idea about how much wood is in each stack? They are about 5' diameter and just about 6-7' tall. Love the fact that you can throw all the cut offs in the center! With the supply I already have at home, we don't anticipate burning this for another two years. Will it last that long or should I start thinking of selling off some?