I bought my meditation seat online. They have two sizes: small (body height <1,75m): front part height: 173mm / back part height: 195mm large (body height >1,75m): front part height: 213mm / back part height: 235mm
I am 1,90m tall and the large one fits well. I chose the version with the carved bottom, so I can adjust the tilt easily.
I like the brace in the second set of plans, but the L brackets would probably work as well.
This is the great gift that alcoholism and addiction confer on us. The suffering of craving is raised to such a high pitch that it becomes impossible to ignore. Many who are not addicts or alcoholics can continue in a state of low level anxiety and dis-ease for their entire lives without ever having a clue about its cause.
~ 9 Essays - Buddhism and the 12 Step Model of Recovery